/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 00:52:47,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 00:52:47,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 00:52:47,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 00:52:47,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 00:52:47,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 00:52:47,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 00:52:47,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 00:52:47,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 00:52:47,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 00:52:47,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 00:52:47,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 00:52:47,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 00:52:47,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 00:52:47,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 00:52:47,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 00:52:47,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 00:52:47,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 00:52:47,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 00:52:47,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 00:52:47,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 00:52:47,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 00:52:47,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 00:52:47,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 00:52:47,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 00:52:47,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 00:52:47,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 00:52:47,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 00:52:47,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 00:52:47,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 00:52:47,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 00:52:47,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 00:52:47,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 00:52:47,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 00:52:47,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 00:52:47,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 00:52:47,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 00:52:47,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 00:52:47,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 00:52:47,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 00:52:47,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 00:52:47,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 00:52:47,393 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 00:52:47,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 00:52:47,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 00:52:47,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 00:52:47,395 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 00:52:47,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 00:52:47,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 00:52:47,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 00:52:47,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 00:52:47,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 00:52:47,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 00:52:47,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 00:52:47,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 00:52:47,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 00:52:47,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 00:52:47,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 00:52:47,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 00:52:47,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 00:52:47,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 00:52:47,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 00:52:47,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 00:52:47,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 00:52:47,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 00:52:47,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 00:52:47,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 00:52:47,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 00:52:47,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 00:52:47,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 00:52:47,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 00:52:47,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 00:52:47,713 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 00:52:47,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 00:52:47,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 00:52:47,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 00:52:47,732 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 00:52:47,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product03.cil.c [2020-07-20 00:52:47,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750b66403/6a0bc82ef1774d3b89574e1f48786280/FLAG197dde958 [2020-07-20 00:52:48,468 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 00:52:48,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product03.cil.c [2020-07-20 00:52:48,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750b66403/6a0bc82ef1774d3b89574e1f48786280/FLAG197dde958 [2020-07-20 00:52:48,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750b66403/6a0bc82ef1774d3b89574e1f48786280 [2020-07-20 00:52:48,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 00:52:48,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 00:52:48,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 00:52:48,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 00:52:48,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 00:52:48,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:52:48" (1/1) ... [2020-07-20 00:52:48,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a5fb6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:52:48, skipping insertion in model container [2020-07-20 00:52:48,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:52:48" (1/1) ... [2020-07-20 00:52:48,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 00:52:48,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 00:52:49,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 00:52:49,496 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 00:52:49,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 00:52:49,731 INFO L208 MainTranslator]: Completed translation [2020-07-20 00:52:49,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:52:49 WrapperNode [2020-07-20 00:52:49,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 00:52:49,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 00:52:49,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 00:52:49,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 00:52:49,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:52:49" (1/1) ... [2020-07-20 00:52:49,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:52:49" (1/1) ... [2020-07-20 00:52:49,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:52:49" (1/1) ... [2020-07-20 00:52:49,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:52:49" (1/1) ... [2020-07-20 00:52:49,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:52:49" (1/1) ... [2020-07-20 00:52:49,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:52:49" (1/1) ... [2020-07-20 00:52:49,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:52:49" (1/1) ... [2020-07-20 00:52:49,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 00:52:49,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 00:52:49,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 00:52:49,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 00:52:49,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:52:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 00:52:50,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 00:52:50,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 00:52:50,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 00:52:50,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2020-07-20 00:52:50,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2020-07-20 00:52:50,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2020-07-20 00:52:50,006 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2020-07-20 00:52:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2020-07-20 00:52:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 00:52:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 00:52:50,008 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2020-07-20 00:52:50,009 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 00:52:50,009 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 00:52:50,010 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 00:52:50,010 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 00:52:50,011 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 00:52:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2020-07-20 00:52:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2020-07-20 00:52:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2020-07-20 00:52:50,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2020-07-20 00:52:50,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2020-07-20 00:52:50,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2020-07-20 00:52:50,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2020-07-20 00:52:50,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2020-07-20 00:52:50,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2020-07-20 00:52:50,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2020-07-20 00:52:50,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2020-07-20 00:52:50,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2020-07-20 00:52:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2020-07-20 00:52:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2020-07-20 00:52:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2020-07-20 00:52:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2020-07-20 00:52:50,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2020-07-20 00:52:50,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2020-07-20 00:52:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2020-07-20 00:52:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2020-07-20 00:52:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2020-07-20 00:52:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2020-07-20 00:52:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2020-07-20 00:52:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2020-07-20 00:52:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Base [2020-07-20 00:52:50,021 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2020-07-20 00:52:50,021 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2020-07-20 00:52:50,021 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2020-07-20 00:52:50,021 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2020-07-20 00:52:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2020-07-20 00:52:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2020-07-20 00:52:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2020-07-20 00:52:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2020-07-20 00:52:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2020-07-20 00:52:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 00:52:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2020-07-20 00:52:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 00:52:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 00:52:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 00:52:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 00:52:50,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 00:52:50,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 00:52:50,025 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2020-07-20 00:52:50,026 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2020-07-20 00:52:50,026 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2020-07-20 00:52:50,027 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2020-07-20 00:52:50,027 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2020-07-20 00:52:50,027 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2020-07-20 00:52:50,028 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2020-07-20 00:52:50,028 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2020-07-20 00:52:50,028 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2020-07-20 00:52:50,029 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2020-07-20 00:52:50,029 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2020-07-20 00:52:50,029 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2020-07-20 00:52:50,030 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2020-07-20 00:52:50,030 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2020-07-20 00:52:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2020-07-20 00:52:50,032 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2020-07-20 00:52:50,032 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2020-07-20 00:52:50,032 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2020-07-20 00:52:50,033 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2020-07-20 00:52:50,034 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2020-07-20 00:52:50,034 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2020-07-20 00:52:50,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2020-07-20 00:52:50,035 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2020-07-20 00:52:50,035 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2020-07-20 00:52:50,036 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2020-07-20 00:52:50,037 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2020-07-20 00:52:50,037 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2020-07-20 00:52:50,037 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2020-07-20 00:52:50,038 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2020-07-20 00:52:50,039 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2020-07-20 00:52:50,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2020-07-20 00:52:50,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2020-07-20 00:52:50,040 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2020-07-20 00:52:50,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 00:52:50,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 00:52:50,041 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 00:52:50,041 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-20 00:52:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2020-07-20 00:52:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2020-07-20 00:52:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 00:52:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 00:52:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 00:52:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2020-07-20 00:52:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2020-07-20 00:52:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2020-07-20 00:52:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2020-07-20 00:52:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2020-07-20 00:52:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2020-07-20 00:52:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2020-07-20 00:52:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2020-07-20 00:52:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2020-07-20 00:52:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2020-07-20 00:52:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 00:52:50,047 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 00:52:50,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 00:52:50,047 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2020-07-20 00:52:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 00:52:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 00:52:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2020-07-20 00:52:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2020-07-20 00:52:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2020-07-20 00:52:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2020-07-20 00:52:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2020-07-20 00:52:50,052 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2020-07-20 00:52:50,052 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2020-07-20 00:52:50,053 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2020-07-20 00:52:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2020-07-20 00:52:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2020-07-20 00:52:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2020-07-20 00:52:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2020-07-20 00:52:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2020-07-20 00:52:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2020-07-20 00:52:50,056 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2020-07-20 00:52:50,056 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2020-07-20 00:52:50,057 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2020-07-20 00:52:50,057 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2020-07-20 00:52:50,058 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2020-07-20 00:52:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2020-07-20 00:52:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2020-07-20 00:52:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2020-07-20 00:52:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2020-07-20 00:52:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2020-07-20 00:52:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2020-07-20 00:52:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2020-07-20 00:52:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2020-07-20 00:52:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2020-07-20 00:52:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2020-07-20 00:52:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2020-07-20 00:52:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2020-07-20 00:52:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Base [2020-07-20 00:52:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2020-07-20 00:52:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 00:52:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2020-07-20 00:52:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2020-07-20 00:52:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 00:52:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 00:52:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 00:52:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 00:52:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 00:52:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 00:52:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 00:52:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 00:52:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 00:52:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 00:52:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 00:52:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 00:52:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 00:52:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 00:52:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 00:52:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 00:52:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2020-07-20 00:52:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2020-07-20 00:52:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2020-07-20 00:52:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2020-07-20 00:52:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2020-07-20 00:52:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2020-07-20 00:52:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2020-07-20 00:52:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2020-07-20 00:52:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2020-07-20 00:52:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2020-07-20 00:52:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2020-07-20 00:52:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2020-07-20 00:52:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2020-07-20 00:52:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2020-07-20 00:52:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2020-07-20 00:52:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2020-07-20 00:52:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2020-07-20 00:52:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2020-07-20 00:52:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2020-07-20 00:52:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2020-07-20 00:52:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2020-07-20 00:52:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2020-07-20 00:52:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2020-07-20 00:52:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2020-07-20 00:52:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2020-07-20 00:52:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2020-07-20 00:52:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 00:52:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 00:52:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 00:52:52,360 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 00:52:52,360 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 00:52:52,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:52:52 BoogieIcfgContainer [2020-07-20 00:52:52,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 00:52:52,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 00:52:52,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 00:52:52,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 00:52:52,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:52:48" (1/3) ... [2020-07-20 00:52:52,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec5eeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:52:52, skipping insertion in model container [2020-07-20 00:52:52,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:52:49" (2/3) ... [2020-07-20 00:52:52,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec5eeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:52:52, skipping insertion in model container [2020-07-20 00:52:52,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:52:52" (3/3) ... [2020-07-20 00:52:52,375 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product03.cil.c [2020-07-20 00:52:52,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 00:52:52,397 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 00:52:52,412 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 00:52:52,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 00:52:52,440 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 00:52:52,440 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 00:52:52,440 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 00:52:52,440 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 00:52:52,441 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 00:52:52,441 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 00:52:52,441 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 00:52:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states. [2020-07-20 00:52:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-20 00:52:52,479 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:52:52,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:52:52,481 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:52:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:52:52,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1055446932, now seen corresponding path program 1 times [2020-07-20 00:52:52,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:52:52,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831380866] [2020-07-20 00:52:52,500 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:52:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,390 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:52:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 00:52:54,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831380866] [2020-07-20 00:52:54,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856668843] [2020-07-20 00:52:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f662027 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 00:52:55,700 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f662027 issued 3 check-sat command(s) [2020-07-20 00:52:55,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 00:52:55,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 00:52:55,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 00:52:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-20 00:52:55,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 00:52:55,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2020-07-20 00:52:55,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111514754] [2020-07-20 00:52:55,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 00:52:55,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:52:55,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 00:52:55,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-20 00:52:55,785 INFO L87 Difference]: Start difference. First operand 220 states. Second operand 2 states. [2020-07-20 00:52:55,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:52:55,831 INFO L93 Difference]: Finished difference Result 336 states and 417 transitions. [2020-07-20 00:52:55,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 00:52:55,832 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 125 [2020-07-20 00:52:55,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:52:55,846 INFO L225 Difference]: With dead ends: 336 [2020-07-20 00:52:55,846 INFO L226 Difference]: Without dead ends: 200 [2020-07-20 00:52:55,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-20 00:52:55,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-07-20 00:52:55,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-07-20 00:52:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-20 00:52:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 248 transitions. [2020-07-20 00:52:55,917 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 248 transitions. Word has length 125 [2020-07-20 00:52:55,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:52:55,919 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 248 transitions. [2020-07-20 00:52:55,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 00:52:55,920 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 248 transitions. [2020-07-20 00:52:55,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-20 00:52:55,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:52:55,924 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:52:56,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-20 00:52:56,139 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:52:56,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:52:56,139 INFO L82 PathProgramCache]: Analyzing trace with hash -121667894, now seen corresponding path program 1 times [2020-07-20 00:52:56,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:52:56,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761368818] [2020-07-20 00:52:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:52:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,567 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:52:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 00:52:57,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761368818] [2020-07-20 00:52:57,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907476724] [2020-07-20 00:52:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e81f3c1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 00:52:58,426 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e81f3c1 issued 2 check-sat command(s) [2020-07-20 00:52:58,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 00:52:58,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 00:52:58,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 00:52:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-20 00:52:58,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 00:52:58,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2020-07-20 00:52:58,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355775057] [2020-07-20 00:52:58,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 00:52:58,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:52:58,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 00:52:58,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-07-20 00:52:58,496 INFO L87 Difference]: Start difference. First operand 200 states and 248 transitions. Second operand 3 states. [2020-07-20 00:52:58,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:52:58,533 INFO L93 Difference]: Finished difference Result 319 states and 385 transitions. [2020-07-20 00:52:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 00:52:58,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2020-07-20 00:52:58,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:52:58,537 INFO L225 Difference]: With dead ends: 319 [2020-07-20 00:52:58,538 INFO L226 Difference]: Without dead ends: 203 [2020-07-20 00:52:58,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-07-20 00:52:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-20 00:52:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2020-07-20 00:52:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-07-20 00:52:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 250 transitions. [2020-07-20 00:52:58,561 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 250 transitions. Word has length 126 [2020-07-20 00:52:58,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:52:58,562 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 250 transitions. [2020-07-20 00:52:58,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 00:52:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 250 transitions. [2020-07-20 00:52:58,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-20 00:52:58,565 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:52:58,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:52:58,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 00:52:58,779 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:52:58,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:52:58,779 INFO L82 PathProgramCache]: Analyzing trace with hash 164607131, now seen corresponding path program 1 times [2020-07-20 00:52:58,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:52:58,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725214515] [2020-07-20 00:52:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:52:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:52:59,978 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:52:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 00:53:00,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725214515] [2020-07-20 00:53:00,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749905731] [2020-07-20 00:53:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1fab92 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 00:53:00,873 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1fab92 issued 2 check-sat command(s) [2020-07-20 00:53:00,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 00:53:00,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1596 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 00:53:00,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 00:53:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-20 00:53:00,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 00:53:00,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 15 [2020-07-20 00:53:00,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20398755] [2020-07-20 00:53:00,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 00:53:00,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:53:00,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 00:53:00,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:53:00,948 INFO L87 Difference]: Start difference. First operand 202 states and 250 transitions. Second operand 15 states. [2020-07-20 00:53:02,773 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:53:04,309 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 501 [2020-07-20 00:53:05,583 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-20 00:53:06,872 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-20 00:53:08,510 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-20 00:53:09,715 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-20 00:53:14,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:53:14,639 INFO L93 Difference]: Finished difference Result 548 states and 737 transitions. [2020-07-20 00:53:14,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-20 00:53:14,640 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 131 [2020-07-20 00:53:14,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:53:14,648 INFO L225 Difference]: With dead ends: 548 [2020-07-20 00:53:14,649 INFO L226 Difference]: Without dead ends: 375 [2020-07-20 00:53:14,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2020-07-20 00:53:14,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-07-20 00:53:14,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 237. [2020-07-20 00:53:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-07-20 00:53:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 310 transitions. [2020-07-20 00:53:14,783 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 310 transitions. Word has length 131 [2020-07-20 00:53:14,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:53:14,783 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 310 transitions. [2020-07-20 00:53:14,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 00:53:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 310 transitions. [2020-07-20 00:53:14,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-07-20 00:53:14,787 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:53:14,787 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:53:15,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 00:53:15,002 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:53:15,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:53:15,002 INFO L82 PathProgramCache]: Analyzing trace with hash -2045420083, now seen corresponding path program 1 times [2020-07-20 00:53:15,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:53:15,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967391679] [2020-07-20 00:53:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:53:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,201 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:53:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-07-20 00:53:16,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967391679] [2020-07-20 00:53:16,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:53:16,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-20 00:53:16,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473263225] [2020-07-20 00:53:16,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 00:53:16,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:53:16,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 00:53:16,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-20 00:53:16,541 INFO L87 Difference]: Start difference. First operand 237 states and 310 transitions. Second operand 13 states. [2020-07-20 00:53:18,917 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:53:20,490 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 501 [2020-07-20 00:53:21,640 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-20 00:53:22,849 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-20 00:53:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:53:27,141 INFO L93 Difference]: Finished difference Result 570 states and 776 transitions. [2020-07-20 00:53:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 00:53:27,141 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 137 [2020-07-20 00:53:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:53:27,145 INFO L225 Difference]: With dead ends: 570 [2020-07-20 00:53:27,145 INFO L226 Difference]: Without dead ends: 378 [2020-07-20 00:53:27,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2020-07-20 00:53:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-07-20 00:53:27,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 241. [2020-07-20 00:53:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-07-20 00:53:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 314 transitions. [2020-07-20 00:53:27,252 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 314 transitions. Word has length 137 [2020-07-20 00:53:27,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:53:27,253 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 314 transitions. [2020-07-20 00:53:27,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 00:53:27,253 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 314 transitions. [2020-07-20 00:53:27,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-07-20 00:53:27,256 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:53:27,256 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:53:27,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 00:53:27,256 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:53:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:53:27,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1816827502, now seen corresponding path program 2 times [2020-07-20 00:53:27,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:53:27,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754251820] [2020-07-20 00:53:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:53:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,596 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:53:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-07-20 00:53:28,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754251820] [2020-07-20 00:53:28,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:53:28,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-20 00:53:28,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589656428] [2020-07-20 00:53:28,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 00:53:28,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:53:28,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 00:53:28,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-20 00:53:28,936 INFO L87 Difference]: Start difference. First operand 241 states and 314 transitions. Second operand 13 states. [2020-07-20 00:53:31,131 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:53:32,890 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 501 [2020-07-20 00:53:34,036 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-20 00:53:35,201 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-20 00:53:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:53:40,044 INFO L93 Difference]: Finished difference Result 570 states and 775 transitions. [2020-07-20 00:53:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 00:53:40,051 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-07-20 00:53:40,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:53:40,055 INFO L225 Difference]: With dead ends: 570 [2020-07-20 00:53:40,055 INFO L226 Difference]: Without dead ends: 380 [2020-07-20 00:53:40,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2020-07-20 00:53:40,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-07-20 00:53:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 241. [2020-07-20 00:53:40,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-07-20 00:53:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 313 transitions. [2020-07-20 00:53:40,170 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 313 transitions. Word has length 138 [2020-07-20 00:53:40,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:53:40,171 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 313 transitions. [2020-07-20 00:53:40,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 00:53:40,171 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 313 transitions. [2020-07-20 00:53:40,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-20 00:53:40,173 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:53:40,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:53:40,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 00:53:40,174 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:53:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:53:40,174 INFO L82 PathProgramCache]: Analyzing trace with hash 903324488, now seen corresponding path program 1 times [2020-07-20 00:53:40,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:53:40,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147412369] [2020-07-20 00:53:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:53:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,412 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:53:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:53:41,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147412369] [2020-07-20 00:53:41,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:53:41,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-20 00:53:41,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508523705] [2020-07-20 00:53:41,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 00:53:41,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:53:41,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 00:53:41,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-20 00:53:41,643 INFO L87 Difference]: Start difference. First operand 241 states and 313 transitions. Second operand 12 states. [2020-07-20 00:53:43,442 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:53:44,651 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:53:45,850 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:53:47,658 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 503 [2020-07-20 00:53:52,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:53:52,078 INFO L93 Difference]: Finished difference Result 609 states and 859 transitions. [2020-07-20 00:53:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 00:53:52,079 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-07-20 00:53:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:53:52,084 INFO L225 Difference]: With dead ends: 609 [2020-07-20 00:53:52,084 INFO L226 Difference]: Without dead ends: 457 [2020-07-20 00:53:52,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-07-20 00:53:52,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-07-20 00:53:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 291. [2020-07-20 00:53:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-07-20 00:53:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 406 transitions. [2020-07-20 00:53:52,202 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 406 transitions. Word has length 139 [2020-07-20 00:53:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:53:52,203 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 406 transitions. [2020-07-20 00:53:52,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 00:53:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 406 transitions. [2020-07-20 00:53:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-07-20 00:53:52,205 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:53:52,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:53:52,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 00:53:52,206 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:53:52,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:53:52,206 INFO L82 PathProgramCache]: Analyzing trace with hash -2066679306, now seen corresponding path program 1 times [2020-07-20 00:53:52,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:53:52,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604237224] [2020-07-20 00:53:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:53:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,394 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:53:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:53:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-20 00:53:53,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604237224] [2020-07-20 00:53:53,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:53:53,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:53:53,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093915170] [2020-07-20 00:53:53,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:53:53,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:53:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:53:53,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:53:53,590 INFO L87 Difference]: Start difference. First operand 291 states and 406 transitions. Second operand 9 states. [2020-07-20 00:53:55,484 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:53:59,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:53:59,323 INFO L93 Difference]: Finished difference Result 773 states and 1163 transitions. [2020-07-20 00:53:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 00:53:59,324 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2020-07-20 00:53:59,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:53:59,328 INFO L225 Difference]: With dead ends: 773 [2020-07-20 00:53:59,329 INFO L226 Difference]: Without dead ends: 555 [2020-07-20 00:53:59,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:53:59,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-07-20 00:53:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 342. [2020-07-20 00:53:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-07-20 00:53:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 495 transitions. [2020-07-20 00:53:59,481 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 495 transitions. Word has length 141 [2020-07-20 00:53:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:53:59,482 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 495 transitions. [2020-07-20 00:53:59,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:53:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 495 transitions. [2020-07-20 00:53:59,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-20 00:53:59,484 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:53:59,484 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:53:59,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 00:53:59,485 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:53:59,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:53:59,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1707635542, now seen corresponding path program 1 times [2020-07-20 00:53:59,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:53:59,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943581130] [2020-07-20 00:53:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:53:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,702 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:54:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:54:00,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943581130] [2020-07-20 00:54:00,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614572325] [2020-07-20 00:54:00,895 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@650a6715 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 00:54:01,331 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@650a6715 issued 2 check-sat command(s) [2020-07-20 00:54:01,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 00:54:01,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 00:54:01,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 00:54:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:54:01,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 00:54:01,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 12 [2020-07-20 00:54:01,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354126772] [2020-07-20 00:54:01,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 00:54:01,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:01,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 00:54:01,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-20 00:54:01,392 INFO L87 Difference]: Start difference. First operand 342 states and 495 transitions. Second operand 12 states. [2020-07-20 00:54:03,524 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:54:04,665 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:54:05,938 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:54:10,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:10,611 INFO L93 Difference]: Finished difference Result 873 states and 1347 transitions. [2020-07-20 00:54:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 00:54:10,616 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 142 [2020-07-20 00:54:10,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:10,621 INFO L225 Difference]: With dead ends: 873 [2020-07-20 00:54:10,621 INFO L226 Difference]: Without dead ends: 757 [2020-07-20 00:54:10,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-07-20 00:54:10,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-07-20 00:54:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 442. [2020-07-20 00:54:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-07-20 00:54:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 677 transitions. [2020-07-20 00:54:10,810 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 677 transitions. Word has length 142 [2020-07-20 00:54:10,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:10,811 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 677 transitions. [2020-07-20 00:54:10,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 00:54:10,811 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 677 transitions. [2020-07-20 00:54:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-20 00:54:10,814 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:10,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:11,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 00:54:11,028 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:11,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:11,029 INFO L82 PathProgramCache]: Analyzing trace with hash -492606537, now seen corresponding path program 1 times [2020-07-20 00:54:11,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:11,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539723231] [2020-07-20 00:54:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:54:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,226 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:54:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:12,420 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:54:12,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539723231] [2020-07-20 00:54:12,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:12,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:54:12,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583948334] [2020-07-20 00:54:12,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:54:12,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:12,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:54:12,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:54:12,422 INFO L87 Difference]: Start difference. First operand 442 states and 677 transitions. Second operand 9 states. [2020-07-20 00:54:14,427 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:54:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:18,481 INFO L93 Difference]: Finished difference Result 906 states and 1394 transitions. [2020-07-20 00:54:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 00:54:18,486 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2020-07-20 00:54:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:18,490 INFO L225 Difference]: With dead ends: 906 [2020-07-20 00:54:18,490 INFO L226 Difference]: Without dead ends: 657 [2020-07-20 00:54:18,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:54:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-07-20 00:54:18,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 397. [2020-07-20 00:54:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-07-20 00:54:18,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 588 transitions. [2020-07-20 00:54:18,668 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 588 transitions. Word has length 142 [2020-07-20 00:54:18,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:18,669 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 588 transitions. [2020-07-20 00:54:18,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:54:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 588 transitions. [2020-07-20 00:54:18,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-20 00:54:18,671 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:18,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:18,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 00:54:18,671 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:18,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1788952943, now seen corresponding path program 1 times [2020-07-20 00:54:18,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:18,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287070374] [2020-07-20 00:54:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:54:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:19,892 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:54:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:54:20,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287070374] [2020-07-20 00:54:20,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:20,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:54:20,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125514972] [2020-07-20 00:54:20,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:54:20,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:20,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:54:20,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:54:20,112 INFO L87 Difference]: Start difference. First operand 397 states and 588 transitions. Second operand 9 states. [2020-07-20 00:54:22,255 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:54:26,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:26,102 INFO L93 Difference]: Finished difference Result 1192 states and 1910 transitions. [2020-07-20 00:54:26,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 00:54:26,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-07-20 00:54:26,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:26,108 INFO L225 Difference]: With dead ends: 1192 [2020-07-20 00:54:26,108 INFO L226 Difference]: Without dead ends: 886 [2020-07-20 00:54:26,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:54:26,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-07-20 00:54:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 525. [2020-07-20 00:54:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-07-20 00:54:26,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 808 transitions. [2020-07-20 00:54:26,409 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 808 transitions. Word has length 143 [2020-07-20 00:54:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:26,409 INFO L479 AbstractCegarLoop]: Abstraction has 525 states and 808 transitions. [2020-07-20 00:54:26,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:54:26,409 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 808 transitions. [2020-07-20 00:54:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-07-20 00:54:26,412 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:26,412 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:26,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 00:54:26,412 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:26,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:26,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2070588427, now seen corresponding path program 1 times [2020-07-20 00:54:26,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:26,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353061264] [2020-07-20 00:54:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:54:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,606 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:54:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:54:27,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353061264] [2020-07-20 00:54:27,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:27,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:54:27,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512152164] [2020-07-20 00:54:27,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:54:27,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:27,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:54:27,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:54:27,783 INFO L87 Difference]: Start difference. First operand 525 states and 808 transitions. Second operand 9 states. [2020-07-20 00:54:29,691 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:54:33,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:33,773 INFO L93 Difference]: Finished difference Result 1713 states and 2832 transitions. [2020-07-20 00:54:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 00:54:33,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 144 [2020-07-20 00:54:33,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:33,786 INFO L225 Difference]: With dead ends: 1713 [2020-07-20 00:54:33,786 INFO L226 Difference]: Without dead ends: 1301 [2020-07-20 00:54:33,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:54:33,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-07-20 00:54:34,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 747. [2020-07-20 00:54:34,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-07-20 00:54:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1188 transitions. [2020-07-20 00:54:34,341 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1188 transitions. Word has length 144 [2020-07-20 00:54:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:34,342 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 1188 transitions. [2020-07-20 00:54:34,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:54:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1188 transitions. [2020-07-20 00:54:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-20 00:54:34,347 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:34,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:34,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 00:54:34,347 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:34,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2144926737, now seen corresponding path program 1 times [2020-07-20 00:54:34,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:34,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380042605] [2020-07-20 00:54:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:54:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,573 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:54:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:54:35,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380042605] [2020-07-20 00:54:35,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:35,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:54:35,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433608574] [2020-07-20 00:54:35,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:54:35,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:35,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:54:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:54:35,792 INFO L87 Difference]: Start difference. First operand 747 states and 1188 transitions. Second operand 9 states. [2020-07-20 00:54:37,698 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:54:42,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:42,480 INFO L93 Difference]: Finished difference Result 2684 states and 4538 transitions. [2020-07-20 00:54:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 00:54:42,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 145 [2020-07-20 00:54:42,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:42,490 INFO L225 Difference]: With dead ends: 2684 [2020-07-20 00:54:42,490 INFO L226 Difference]: Without dead ends: 2078 [2020-07-20 00:54:42,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:54:42,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2020-07-20 00:54:43,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1151. [2020-07-20 00:54:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-07-20 00:54:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1876 transitions. [2020-07-20 00:54:43,180 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1876 transitions. Word has length 145 [2020-07-20 00:54:43,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:43,180 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1876 transitions. [2020-07-20 00:54:43,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:54:43,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1876 transitions. [2020-07-20 00:54:43,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-20 00:54:43,184 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:43,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:43,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 00:54:43,185 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:43,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:43,185 INFO L82 PathProgramCache]: Analyzing trace with hash -756078253, now seen corresponding path program 1 times [2020-07-20 00:54:43,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:43,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823733620] [2020-07-20 00:54:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:54:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,492 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:54:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:54:44,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823733620] [2020-07-20 00:54:44,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:44,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:54:44,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900653903] [2020-07-20 00:54:44,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:54:44,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:44,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:54:44,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:54:44,756 INFO L87 Difference]: Start difference. First operand 1151 states and 1876 transitions. Second operand 9 states. [2020-07-20 00:54:46,706 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:54:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:52,770 INFO L93 Difference]: Finished difference Result 4537 states and 7760 transitions. [2020-07-20 00:54:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 00:54:52,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 146 [2020-07-20 00:54:52,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:52,788 INFO L225 Difference]: With dead ends: 4537 [2020-07-20 00:54:52,788 INFO L226 Difference]: Without dead ends: 3561 [2020-07-20 00:54:52,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:54:52,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-07-20 00:54:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 1909. [2020-07-20 00:54:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1909 states. [2020-07-20 00:54:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 3156 transitions. [2020-07-20 00:54:54,471 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 3156 transitions. Word has length 146 [2020-07-20 00:54:54,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:54,472 INFO L479 AbstractCegarLoop]: Abstraction has 1909 states and 3156 transitions. [2020-07-20 00:54:54,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:54:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 3156 transitions. [2020-07-20 00:54:54,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-20 00:54:54,478 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:54,478 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:54,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 00:54:54,479 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:54,479 INFO L82 PathProgramCache]: Analyzing trace with hash -368501069, now seen corresponding path program 1 times [2020-07-20 00:54:54,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:54,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491138015] [2020-07-20 00:54:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:54:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,694 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:54:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:54:55,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491138015] [2020-07-20 00:54:55,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:55,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:54:55,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761658321] [2020-07-20 00:54:55,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:54:55,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:55,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:54:55,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:54:55,879 INFO L87 Difference]: Start difference. First operand 1909 states and 3156 transitions. Second operand 9 states. [2020-07-20 00:54:58,077 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:55:06,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:55:06,972 INFO L93 Difference]: Finished difference Result 8116 states and 13902 transitions. [2020-07-20 00:55:06,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 00:55:06,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 147 [2020-07-20 00:55:06,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:55:06,999 INFO L225 Difference]: With dead ends: 8116 [2020-07-20 00:55:07,000 INFO L226 Difference]: Without dead ends: 6422 [2020-07-20 00:55:07,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:55:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6422 states. [2020-07-20 00:55:10,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6422 to 3357. [2020-07-20 00:55:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3357 states. [2020-07-20 00:55:10,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 5572 transitions. [2020-07-20 00:55:10,261 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 5572 transitions. Word has length 147 [2020-07-20 00:55:10,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:55:10,262 INFO L479 AbstractCegarLoop]: Abstraction has 3357 states and 5572 transitions. [2020-07-20 00:55:10,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:55:10,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 5572 transitions. [2020-07-20 00:55:10,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-07-20 00:55:10,269 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:55:10,270 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:55:10,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 00:55:10,270 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:55:10,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:55:10,271 INFO L82 PathProgramCache]: Analyzing trace with hash -264665423, now seen corresponding path program 1 times [2020-07-20 00:55:10,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:55:10,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587257261] [2020-07-20 00:55:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:55:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,451 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:55:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:55:11,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587257261] [2020-07-20 00:55:11,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:55:11,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:55:11,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118916735] [2020-07-20 00:55:11,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:55:11,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:55:11,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:55:11,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:55:11,649 INFO L87 Difference]: Start difference. First operand 3357 states and 5572 transitions. Second operand 9 states. [2020-07-20 00:55:13,800 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:55:26,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:55:26,979 INFO L93 Difference]: Finished difference Result 15069 states and 25652 transitions. [2020-07-20 00:55:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 00:55:26,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2020-07-20 00:55:26,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:55:27,039 INFO L225 Difference]: With dead ends: 15069 [2020-07-20 00:55:27,040 INFO L226 Difference]: Without dead ends: 11973 [2020-07-20 00:55:27,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:55:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11973 states. [2020-07-20 00:55:32,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11973 to 6151. [2020-07-20 00:55:32,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6151 states. [2020-07-20 00:55:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6151 states to 6151 states and 10164 transitions. [2020-07-20 00:55:32,453 INFO L78 Accepts]: Start accepts. Automaton has 6151 states and 10164 transitions. Word has length 148 [2020-07-20 00:55:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:55:32,454 INFO L479 AbstractCegarLoop]: Abstraction has 6151 states and 10164 transitions. [2020-07-20 00:55:32,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:55:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 6151 states and 10164 transitions. [2020-07-20 00:55:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-20 00:55:32,467 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:55:32,468 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:55:32,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 00:55:32,468 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:55:32,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:55:32,468 INFO L82 PathProgramCache]: Analyzing trace with hash -616576683, now seen corresponding path program 1 times [2020-07-20 00:55:32,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:55:32,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571997279] [2020-07-20 00:55:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:55:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,663 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:55:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:55:33,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571997279] [2020-07-20 00:55:33,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:55:33,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:55:33,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633495029] [2020-07-20 00:55:33,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:55:33,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:55:33,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:55:33,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:55:33,825 INFO L87 Difference]: Start difference. First operand 6151 states and 10164 transitions. Second operand 9 states. [2020-07-20 00:55:36,536 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:56:01,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:56:01,845 INFO L93 Difference]: Finished difference Result 28612 states and 48146 transitions. [2020-07-20 00:56:01,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 00:56:01,845 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 149 [2020-07-20 00:56:01,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:56:01,921 INFO L225 Difference]: With dead ends: 28612 [2020-07-20 00:56:01,922 INFO L226 Difference]: Without dead ends: 22774 [2020-07-20 00:56:01,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:56:01,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2020-07-20 00:56:12,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 11571. [2020-07-20 00:56:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11571 states. [2020-07-20 00:56:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11571 states to 11571 states and 18916 transitions. [2020-07-20 00:56:12,334 INFO L78 Accepts]: Start accepts. Automaton has 11571 states and 18916 transitions. Word has length 149 [2020-07-20 00:56:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:56:12,335 INFO L479 AbstractCegarLoop]: Abstraction has 11571 states and 18916 transitions. [2020-07-20 00:56:12,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:56:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 11571 states and 18916 transitions. [2020-07-20 00:56:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-20 00:56:12,360 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:56:12,360 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:56:12,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-20 00:56:12,360 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:56:12,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:56:12,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1426971217, now seen corresponding path program 2 times [2020-07-20 00:56:12,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:56:12,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638864769] [2020-07-20 00:56:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:56:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,635 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:56:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-20 00:56:13,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638864769] [2020-07-20 00:56:13,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:56:13,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-20 00:56:13,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660966577] [2020-07-20 00:56:13,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 00:56:13,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:56:13,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 00:56:13,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-20 00:56:13,840 INFO L87 Difference]: Start difference. First operand 11571 states and 18916 transitions. Second operand 12 states. [2020-07-20 00:56:15,635 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:56:16,859 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:56:18,206 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:56:20,207 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 503 [2020-07-20 00:56:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:56:47,053 INFO L93 Difference]: Finished difference Result 33940 states and 56238 transitions. [2020-07-20 00:56:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 00:56:47,053 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 150 [2020-07-20 00:56:47,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:56:47,114 INFO L225 Difference]: With dead ends: 33940 [2020-07-20 00:56:47,114 INFO L226 Difference]: Without dead ends: 22774 [2020-07-20 00:56:47,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-07-20 00:56:47,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2020-07-20 00:56:58,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 11571. [2020-07-20 00:56:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11571 states. [2020-07-20 00:56:58,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11571 states to 11571 states and 18659 transitions. [2020-07-20 00:56:58,168 INFO L78 Accepts]: Start accepts. Automaton has 11571 states and 18659 transitions. Word has length 150 [2020-07-20 00:56:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:56:58,168 INFO L479 AbstractCegarLoop]: Abstraction has 11571 states and 18659 transitions. [2020-07-20 00:56:58,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 00:56:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 11571 states and 18659 transitions. [2020-07-20 00:56:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-20 00:56:58,183 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:56:58,184 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:56:58,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-20 00:56:58,184 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:56:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:56:58,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1382435855, now seen corresponding path program 1 times [2020-07-20 00:56:58,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:56:58,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132234905] [2020-07-20 00:56:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:56:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,437 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:56:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:56:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:56:59,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132234905] [2020-07-20 00:56:59,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:56:59,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:56:59,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066215458] [2020-07-20 00:56:59,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:56:59,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:56:59,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:56:59,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:56:59,606 INFO L87 Difference]: Start difference. First operand 11571 states and 18659 transitions. Second operand 9 states. [2020-07-20 00:57:01,721 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:57:50,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:57:50,181 INFO L93 Difference]: Finished difference Result 55017 states and 89895 transitions. [2020-07-20 00:57:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 00:57:50,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 150 [2020-07-20 00:57:50,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:57:50,300 INFO L225 Difference]: With dead ends: 55017 [2020-07-20 00:57:50,300 INFO L226 Difference]: Without dead ends: 43817 [2020-07-20 00:57:50,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:57:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43817 states. [2020-07-20 00:58:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43817 to 22113. [2020-07-20 00:58:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22113 states. [2020-07-20 00:58:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22113 states to 22113 states and 35091 transitions. [2020-07-20 00:58:12,857 INFO L78 Accepts]: Start accepts. Automaton has 22113 states and 35091 transitions. Word has length 150 [2020-07-20 00:58:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:58:12,857 INFO L479 AbstractCegarLoop]: Abstraction has 22113 states and 35091 transitions. [2020-07-20 00:58:12,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:58:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 22113 states and 35091 transitions. [2020-07-20 00:58:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-20 00:58:12,881 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:58:12,881 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:58:12,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-20 00:58:12,882 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:58:12,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:58:12,882 INFO L82 PathProgramCache]: Analyzing trace with hash -163986702, now seen corresponding path program 1 times [2020-07-20 00:58:12,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:58:12,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131020821] [2020-07-20 00:58:12,883 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:58:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,101 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:58:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:58:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:58:14,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131020821] [2020-07-20 00:58:14,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132831573] [2020-07-20 00:58:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b96bf5f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 00:58:14,797 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b96bf5f issued 2 check-sat command(s) [2020-07-20 00:58:14,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 00:58:14,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 00:58:14,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 00:58:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-20 00:58:14,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 00:58:14,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2020-07-20 00:58:14,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775451930] [2020-07-20 00:58:14,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 00:58:14,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:58:14,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 00:58:14,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-07-20 00:58:14,904 INFO L87 Difference]: Start difference. First operand 22113 states and 35091 transitions. Second operand 5 states. [2020-07-20 00:58:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:58:40,634 INFO L93 Difference]: Finished difference Result 43837 states and 70181 transitions. [2020-07-20 00:58:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 00:58:40,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-07-20 00:58:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:58:40,691 INFO L225 Difference]: With dead ends: 43837 [2020-07-20 00:58:40,691 INFO L226 Difference]: Without dead ends: 22113 [2020-07-20 00:58:40,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-07-20 00:58:40,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22113 states. [2020-07-20 00:59:05,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22113 to 22113. [2020-07-20 00:59:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22113 states. [2020-07-20 00:59:05,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22113 states to 22113 states and 35090 transitions. [2020-07-20 00:59:05,918 INFO L78 Accepts]: Start accepts. Automaton has 22113 states and 35090 transitions. Word has length 156 [2020-07-20 00:59:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:59:05,918 INFO L479 AbstractCegarLoop]: Abstraction has 22113 states and 35090 transitions. [2020-07-20 00:59:05,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 00:59:05,918 INFO L276 IsEmpty]: Start isEmpty. Operand 22113 states and 35090 transitions. [2020-07-20 00:59:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-20 00:59:05,942 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:59:05,943 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:59:06,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 00:59:06,148 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:59:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:59:06,148 INFO L82 PathProgramCache]: Analyzing trace with hash 834897730, now seen corresponding path program 1 times [2020-07-20 00:59:06,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:59:06,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240134091] [2020-07-20 00:59:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 00:59:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,392 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 00:59:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:59:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:59:07,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240134091] [2020-07-20 00:59:07,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540883948] [2020-07-20 00:59:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4edcdda1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 00:59:07,998 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4edcdda1 issued 2 check-sat command(s) [2020-07-20 00:59:07,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 00:59:08,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 00:59:08,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 00:59:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 00:59:08,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 00:59:08,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 13 [2020-07-20 00:59:08,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94767724] [2020-07-20 00:59:08,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 00:59:08,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:59:08,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 00:59:08,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-07-20 00:59:08,046 INFO L87 Difference]: Start difference. First operand 22113 states and 35090 transitions. Second operand 13 states. [2020-07-20 00:59:10,532 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:59:11,698 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:59:13,178 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 00:59:14,765 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 01:00:11,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:00:11,047 INFO L93 Difference]: Finished difference Result 46237 states and 74397 transitions. [2020-07-20 01:00:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 01:00:11,047 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 151 [2020-07-20 01:00:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:00:11,143 INFO L225 Difference]: With dead ends: 46237 [2020-07-20 01:00:11,143 INFO L226 Difference]: Without dead ends: 46121 [2020-07-20 01:00:11,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2020-07-20 01:00:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46121 states. [2020-07-20 01:00:39,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46121 to 23745. [2020-07-20 01:00:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23745 states. [2020-07-20 01:00:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23745 states to 23745 states and 37420 transitions. [2020-07-20 01:00:39,952 INFO L78 Accepts]: Start accepts. Automaton has 23745 states and 37420 transitions. Word has length 151 [2020-07-20 01:00:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:00:39,953 INFO L479 AbstractCegarLoop]: Abstraction has 23745 states and 37420 transitions. [2020-07-20 01:00:39,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 01:00:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 23745 states and 37420 transitions. [2020-07-20 01:00:39,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-20 01:00:39,973 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:00:39,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:00:40,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:00:40,182 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:00:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:00:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash 2114657271, now seen corresponding path program 1 times [2020-07-20 01:00:40,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:00:40,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24979204] [2020-07-20 01:00:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 01:00:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,388 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 01:00:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:00:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 01:00:41,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24979204] [2020-07-20 01:00:41,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:00:41,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 01:00:41,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806444074] [2020-07-20 01:00:41,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 01:00:41,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:00:41,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 01:00:41,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:00:41,572 INFO L87 Difference]: Start difference. First operand 23745 states and 37420 transitions. Second operand 9 states. [2020-07-20 01:00:43,704 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-20 01:02:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:02:33,035 INFO L93 Difference]: Finished difference Result 87652 states and 140287 transitions. [2020-07-20 01:02:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 01:02:33,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-07-20 01:02:33,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:02:33,231 INFO L225 Difference]: With dead ends: 87652 [2020-07-20 01:02:33,232 INFO L226 Difference]: Without dead ends: 87536 [2020-07-20 01:02:33,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-20 01:02:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87536 states. [2020-07-20 01:03:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87536 to 44605. [2020-07-20 01:03:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44605 states. [2020-07-20 01:03:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44605 states to 44605 states and 69100 transitions. [2020-07-20 01:03:31,764 INFO L78 Accepts]: Start accepts. Automaton has 44605 states and 69100 transitions. Word has length 151 [2020-07-20 01:03:31,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:03:31,764 INFO L479 AbstractCegarLoop]: Abstraction has 44605 states and 69100 transitions. [2020-07-20 01:03:31,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 01:03:31,764 INFO L276 IsEmpty]: Start isEmpty. Operand 44605 states and 69100 transitions. [2020-07-20 01:03:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-20 01:03:31,794 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:03:31,794 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:03:31,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-20 01:03:31,794 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:03:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:03:31,795 INFO L82 PathProgramCache]: Analyzing trace with hash -437823123, now seen corresponding path program 1 times [2020-07-20 01:03:31,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:03:31,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588278691] [2020-07-20 01:03:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3986be68 [2020-07-20 01:03:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,111 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-20 01:03:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:03:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 01:03:33,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588278691] [2020-07-20 01:03:33,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:03:33,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-20 01:03:33,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608333376] [2020-07-20 01:03:33,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 01:03:33,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:03:33,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 01:03:33,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:03:33,334 INFO L87 Difference]: Start difference. First operand 44605 states and 69100 transitions. Second operand 12 states. [2020-07-20 01:03:34,827 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 501 [2020-07-20 01:05:31,997 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 503 [2020-07-20 01:05:33,259 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 503 [2020-07-20 01:05:34,547 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 503 [2020-07-20 01:05:36,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:05:36,701 INFO L93 Difference]: Finished difference Result 87641 states and 138143 transitions. [2020-07-20 01:05:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 01:05:36,704 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-07-20 01:05:36,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:05:36,857 INFO L225 Difference]: With dead ends: 87641 [2020-07-20 01:05:36,857 INFO L226 Difference]: Without dead ends: 87538 [2020-07-20 01:05:36,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-07-20 01:05:36,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87538 states.