/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_FUNCTIONS --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 [2020-07-19 22:44:07,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 22:44:07,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 22:44:07,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 22:44:07,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 22:44:07,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 22:44:07,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 22:44:07,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 22:44:07,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 22:44:07,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 22:44:07,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 22:44:07,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 22:44:07,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 22:44:07,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 22:44:07,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 22:44:07,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 22:44:07,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 22:44:07,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 22:44:07,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 22:44:07,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 22:44:07,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 22:44:07,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 22:44:07,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 22:44:07,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 22:44:07,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 22:44:07,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 22:44:07,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 22:44:07,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 22:44:07,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 22:44:07,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 22:44:07,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 22:44:07,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 22:44:07,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 22:44:07,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 22:44:07,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 22:44:07,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 22:44:07,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 22:44:07,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 22:44:07,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 22:44:07,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 22:44:07,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 22:44:07,609 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 [2020-07-19 22:44:07,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 22:44:07,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 22:44:07,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 22:44:07,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 22:44:07,625 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 22:44:07,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 22:44:07,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 22:44:07,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 22:44:07,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 22:44:07,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 22:44:07,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 22:44:07,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 22:44:07,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 22:44:07,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 22:44:07,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 22:44:07,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 22:44:07,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 22:44:07,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 22:44:07,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 22:44:07,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 22:44:07,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 22:44:07,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 22:44:07,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 22:44:07,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 22:44:07,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 22:44:07,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 22:44:07,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 22:44:07,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 22:44:07,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 22:44:07,630 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_FUNCTIONS 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 [2020-07-19 22:44:07,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 22:44:07,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 22:44:07,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 22:44:07,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 22:44:07,911 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 22:44:07,912 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product03.cil.c [2020-07-19 22:44:07,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4617e4d38/58a713c3a1474fdd8614608018055903/FLAG8dff3631b [2020-07-19 22:44:08,649 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 22:44:08,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product03.cil.c [2020-07-19 22:44:08,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4617e4d38/58a713c3a1474fdd8614608018055903/FLAG8dff3631b [2020-07-19 22:44:08,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4617e4d38/58a713c3a1474fdd8614608018055903 [2020-07-19 22:44:08,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 22:44:08,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 22:44:08,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 22:44:08,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 22:44:08,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 22:44:08,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:44:08" (1/1) ... [2020-07-19 22:44:08,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3085eafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:44:08, skipping insertion in model container [2020-07-19 22:44:08,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:44:08" (1/1) ... [2020-07-19 22:44:08,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 22:44:08,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 22:44:09,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 22:44:09,677 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 22:44:09,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 22:44:09,918 INFO L208 MainTranslator]: Completed translation [2020-07-19 22:44:09,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:44:09 WrapperNode [2020-07-19 22:44:09,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 22:44:09,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 22:44:09,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 22:44:09,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 22:44:09,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:44:09" (1/1) ... [2020-07-19 22:44:09,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:44:09" (1/1) ... [2020-07-19 22:44:09,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:44:09" (1/1) ... [2020-07-19 22:44:09,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:44:09" (1/1) ... [2020-07-19 22:44:10,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:44:09" (1/1) ... [2020-07-19 22:44:10,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:44:09" (1/1) ... [2020-07-19 22:44:10,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:44:09" (1/1) ... [2020-07-19 22:44:10,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 22:44:10,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 22:44:10,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 22:44:10,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 22:44:10,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:44:09" (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 [2020-07-19 22:44:10,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 22:44:10,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 22:44:10,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-19 22:44:10,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2020-07-19 22:44:10,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2020-07-19 22:44:10,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2020-07-19 22:44:10,187 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2020-07-19 22:44:10,188 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2020-07-19 22:44:10,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-19 22:44:10,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 22:44:10,188 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2020-07-19 22:44:10,190 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-19 22:44:10,190 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-19 22:44:10,190 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-19 22:44:10,191 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-19 22:44:10,191 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-19 22:44:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2020-07-19 22:44:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2020-07-19 22:44:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2020-07-19 22:44:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2020-07-19 22:44:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2020-07-19 22:44:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2020-07-19 22:44:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2020-07-19 22:44:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2020-07-19 22:44:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2020-07-19 22:44:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2020-07-19 22:44:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2020-07-19 22:44:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2020-07-19 22:44:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2020-07-19 22:44:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2020-07-19 22:44:10,196 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2020-07-19 22:44:10,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2020-07-19 22:44:10,196 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2020-07-19 22:44:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2020-07-19 22:44:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2020-07-19 22:44:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2020-07-19 22:44:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2020-07-19 22:44:10,198 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2020-07-19 22:44:10,198 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2020-07-19 22:44:10,198 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2020-07-19 22:44:10,198 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Base [2020-07-19 22:44:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2020-07-19 22:44:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2020-07-19 22:44:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2020-07-19 22:44:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2020-07-19 22:44:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2020-07-19 22:44:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2020-07-19 22:44:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2020-07-19 22:44:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2020-07-19 22:44:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2020-07-19 22:44:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-19 22:44:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2020-07-19 22:44:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-19 22:44:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-19 22:44:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-19 22:44:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-19 22:44:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-19 22:44:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-19 22:44:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2020-07-19 22:44:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2020-07-19 22:44:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2020-07-19 22:44:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2020-07-19 22:44:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2020-07-19 22:44:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2020-07-19 22:44:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2020-07-19 22:44:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2020-07-19 22:44:10,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2020-07-19 22:44:10,205 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2020-07-19 22:44:10,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2020-07-19 22:44:10,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2020-07-19 22:44:10,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2020-07-19 22:44:10,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2020-07-19 22:44:10,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2020-07-19 22:44:10,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2020-07-19 22:44:10,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2020-07-19 22:44:10,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2020-07-19 22:44:10,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2020-07-19 22:44:10,208 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2020-07-19 22:44:10,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2020-07-19 22:44:10,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2020-07-19 22:44:10,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2020-07-19 22:44:10,209 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2020-07-19 22:44:10,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2020-07-19 22:44:10,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2020-07-19 22:44:10,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2020-07-19 22:44:10,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2020-07-19 22:44:10,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2020-07-19 22:44:10,211 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2020-07-19 22:44:10,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2020-07-19 22:44:10,212 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2020-07-19 22:44:10,212 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2020-07-19 22:44:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 22:44:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 22:44:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-19 22:44:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-19 22:44:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2020-07-19 22:44:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2020-07-19 22:44:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-19 22:44:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-19 22:44:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-19 22:44:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2020-07-19 22:44:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2020-07-19 22:44:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2020-07-19 22:44:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2020-07-19 22:44:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2020-07-19 22:44:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2020-07-19 22:44:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2020-07-19 22:44:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2020-07-19 22:44:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2020-07-19 22:44:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2020-07-19 22:44:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-19 22:44:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-19 22:44:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 22:44:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2020-07-19 22:44:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 22:44:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-19 22:44:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2020-07-19 22:44:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2020-07-19 22:44:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2020-07-19 22:44:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2020-07-19 22:44:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2020-07-19 22:44:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2020-07-19 22:44:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2020-07-19 22:44:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2020-07-19 22:44:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2020-07-19 22:44:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2020-07-19 22:44:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2020-07-19 22:44:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2020-07-19 22:44:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2020-07-19 22:44:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2020-07-19 22:44:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2020-07-19 22:44:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2020-07-19 22:44:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2020-07-19 22:44:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2020-07-19 22:44:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2020-07-19 22:44:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2020-07-19 22:44:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2020-07-19 22:44:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2020-07-19 22:44:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2020-07-19 22:44:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2020-07-19 22:44:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2020-07-19 22:44:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2020-07-19 22:44:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2020-07-19 22:44:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2020-07-19 22:44:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2020-07-19 22:44:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2020-07-19 22:44:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2020-07-19 22:44:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Base [2020-07-19 22:44:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2020-07-19 22:44:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-19 22:44:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2020-07-19 22:44:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2020-07-19 22:44:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-19 22:44:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 22:44:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 22:44:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-19 22:44:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 22:44:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 22:44:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 22:44:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 22:44:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-19 22:44:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 22:44:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-19 22:44:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-19 22:44:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 22:44:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-19 22:44:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-19 22:44:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-19 22:44:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2020-07-19 22:44:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2020-07-19 22:44:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2020-07-19 22:44:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2020-07-19 22:44:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2020-07-19 22:44:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2020-07-19 22:44:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2020-07-19 22:44:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2020-07-19 22:44:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2020-07-19 22:44:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2020-07-19 22:44:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2020-07-19 22:44:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2020-07-19 22:44:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2020-07-19 22:44:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2020-07-19 22:44:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2020-07-19 22:44:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2020-07-19 22:44:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2020-07-19 22:44:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2020-07-19 22:44:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2020-07-19 22:44:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2020-07-19 22:44:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2020-07-19 22:44:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2020-07-19 22:44:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2020-07-19 22:44:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2020-07-19 22:44:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2020-07-19 22:44:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2020-07-19 22:44:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 22:44:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-19 22:44:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 22:44:11,996 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 22:44:11,996 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-19 22:44:12,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:44:12 BoogieIcfgContainer [2020-07-19 22:44:12,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 22:44:12,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 22:44:12,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 22:44:12,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 22:44:12,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:44:08" (1/3) ... [2020-07-19 22:44:12,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e878011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:44:12, skipping insertion in model container [2020-07-19 22:44:12,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:44:09" (2/3) ... [2020-07-19 22:44:12,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e878011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:44:12, skipping insertion in model container [2020-07-19 22:44:12,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:44:12" (3/3) ... [2020-07-19 22:44:12,010 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product03.cil.c [2020-07-19 22:44:12,021 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 22:44:12,029 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 22:44:12,041 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 22:44:12,067 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 22:44:12,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 22:44:12,068 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 22:44:12,068 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 22:44:12,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 22:44:12,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 22:44:12,068 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 22:44:12,068 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 22:44:12,093 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states. [2020-07-19 22:44:12,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-19 22:44:12,107 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:44:12,109 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] [2020-07-19 22:44:12,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:44:12,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:44:12,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1055446932, now seen corresponding path program 1 times [2020-07-19 22:44:12,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:44:12,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404083348] [2020-07-19 22:44:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:44:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,161 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:44:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-19 22:44:14,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404083348] [2020-07-19 22:44:14,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749355041] [2020-07-19 22:44:14,784 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48792b74 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 [2020-07-19 22:44:15,509 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48792b74 issued 3 check-sat command(s) [2020-07-19 22:44:15,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 22:44:15,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-19 22:44:15,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 22:44:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-19 22:44:15,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 22:44:15,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2020-07-19 22:44:15,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519574998] [2020-07-19 22:44:15,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 22:44:15,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:44:15,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 22:44:15,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-19 22:44:15,596 INFO L87 Difference]: Start difference. First operand 220 states. Second operand 2 states. [2020-07-19 22:44:15,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:44:15,691 INFO L93 Difference]: Finished difference Result 336 states and 417 transitions. [2020-07-19 22:44:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 22:44:15,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 125 [2020-07-19 22:44:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:44:15,716 INFO L225 Difference]: With dead ends: 336 [2020-07-19 22:44:15,716 INFO L226 Difference]: Without dead ends: 200 [2020-07-19 22:44:15,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-19 22:44:15,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-07-19 22:44:15,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-07-19 22:44:15,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-19 22:44:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 248 transitions. [2020-07-19 22:44:15,829 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 248 transitions. Word has length 125 [2020-07-19 22:44:15,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:44:15,831 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 248 transitions. [2020-07-19 22:44:15,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 22:44:15,832 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 248 transitions. [2020-07-19 22:44:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-19 22:44:15,836 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:44:15,836 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] [2020-07-19 22:44:16,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-19 22:44:16,042 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:44:16,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:44:16,043 INFO L82 PathProgramCache]: Analyzing trace with hash -121667894, now seen corresponding path program 1 times [2020-07-19 22:44:16,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:44:16,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791276266] [2020-07-19 22:44:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:44:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,344 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:44:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-19 22:44:17,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791276266] [2020-07-19 22:44:17,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802160752] [2020-07-19 22:44:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@264f8dcd No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 22:44:18,225 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@264f8dcd issued 2 check-sat command(s) [2020-07-19 22:44:18,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 22:44:18,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-19 22:44:18,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 22:44:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-19 22:44:18,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 22:44:18,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2020-07-19 22:44:18,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238776850] [2020-07-19 22:44:18,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 22:44:18,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:44:18,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 22:44:18,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-07-19 22:44:18,312 INFO L87 Difference]: Start difference. First operand 200 states and 248 transitions. Second operand 3 states. [2020-07-19 22:44:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:44:18,347 INFO L93 Difference]: Finished difference Result 319 states and 385 transitions. [2020-07-19 22:44:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 22:44:18,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2020-07-19 22:44:18,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:44:18,351 INFO L225 Difference]: With dead ends: 319 [2020-07-19 22:44:18,351 INFO L226 Difference]: Without dead ends: 203 [2020-07-19 22:44:18,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-07-19 22:44:18,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-19 22:44:18,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2020-07-19 22:44:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-07-19 22:44:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 250 transitions. [2020-07-19 22:44:18,392 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 250 transitions. Word has length 126 [2020-07-19 22:44:18,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:44:18,393 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 250 transitions. [2020-07-19 22:44:18,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 22:44:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 250 transitions. [2020-07-19 22:44:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-19 22:44:18,402 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:44:18,402 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] [2020-07-19 22:44:18,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 22:44:18,619 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:44:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:44:18,620 INFO L82 PathProgramCache]: Analyzing trace with hash 164607131, now seen corresponding path program 1 times [2020-07-19 22:44:18,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:44:18,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465976451] [2020-07-19 22:44:18,621 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:44:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:19,832 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:44:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-19 22:44:20,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465976451] [2020-07-19 22:44:20,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343253235] [2020-07-19 22:44:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2ec42cd2 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 [2020-07-19 22:44:20,794 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2ec42cd2 issued 2 check-sat command(s) [2020-07-19 22:44:20,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 22:44:20,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1596 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-19 22:44:20,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 22:44:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-19 22:44:20,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 22:44:20,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 15 [2020-07-19 22:44:20,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930183574] [2020-07-19 22:44:20,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-19 22:44:20,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:44:20,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-19 22:44:20,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-07-19 22:44:20,882 INFO L87 Difference]: Start difference. First operand 202 states and 250 transitions. Second operand 15 states. [2020-07-19 22:44:22,893 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:44:24,303 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 501 [2020-07-19 22:44:25,623 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-19 22:44:26,906 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-19 22:44:28,583 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-19 22:44:29,781 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-19 22:44:34,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:44:34,550 INFO L93 Difference]: Finished difference Result 548 states and 737 transitions. [2020-07-19 22:44:34,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-19 22:44:34,551 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 131 [2020-07-19 22:44:34,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:44:34,557 INFO L225 Difference]: With dead ends: 548 [2020-07-19 22:44:34,557 INFO L226 Difference]: Without dead ends: 375 [2020-07-19 22:44:34,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2020-07-19 22:44:34,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-07-19 22:44:34,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 237. [2020-07-19 22:44:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-07-19 22:44:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 310 transitions. [2020-07-19 22:44:34,674 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 310 transitions. Word has length 131 [2020-07-19 22:44:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:44:34,675 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 310 transitions. [2020-07-19 22:44:34,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-19 22:44:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 310 transitions. [2020-07-19 22:44:34,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-07-19 22:44:34,678 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:44:34,678 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] [2020-07-19 22:44:34,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 22:44:34,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:44:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:44:34,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2045420083, now seen corresponding path program 1 times [2020-07-19 22:44:34,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:44:34,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123291829] [2020-07-19 22:44:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:44:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,131 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:44:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-07-19 22:44:36,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123291829] [2020-07-19 22:44:36,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:44:36,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-19 22:44:36,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671208700] [2020-07-19 22:44:36,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-19 22:44:36,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:44:36,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-19 22:44:36,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-19 22:44:36,525 INFO L87 Difference]: Start difference. First operand 237 states and 310 transitions. Second operand 13 states. [2020-07-19 22:44:38,472 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:44:40,084 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 501 [2020-07-19 22:44:41,278 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-19 22:44:42,462 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-19 22:44:46,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:44:46,794 INFO L93 Difference]: Finished difference Result 570 states and 776 transitions. [2020-07-19 22:44:46,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-19 22:44:46,795 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 137 [2020-07-19 22:44:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:44:46,800 INFO L225 Difference]: With dead ends: 570 [2020-07-19 22:44:46,800 INFO L226 Difference]: Without dead ends: 378 [2020-07-19 22:44:46,804 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 [2020-07-19 22:44:46,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-07-19 22:44:46,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 241. [2020-07-19 22:44:46,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-07-19 22:44:46,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 314 transitions. [2020-07-19 22:44:46,914 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 314 transitions. Word has length 137 [2020-07-19 22:44:46,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:44:46,914 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 314 transitions. [2020-07-19 22:44:46,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-19 22:44:46,914 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 314 transitions. [2020-07-19 22:44:46,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-07-19 22:44:46,917 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:44:46,917 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] [2020-07-19 22:44:46,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 22:44:46,918 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:44:46,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:44:46,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1816827502, now seen corresponding path program 2 times [2020-07-19 22:44:46,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:44:46,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011553172] [2020-07-19 22:44:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:44:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,094 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:44:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:44:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-07-19 22:44:48,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011553172] [2020-07-19 22:44:48,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:44:48,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-19 22:44:48,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674753689] [2020-07-19 22:44:48,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-19 22:44:48,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:44:48,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-19 22:44:48,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-19 22:44:48,401 INFO L87 Difference]: Start difference. First operand 241 states and 314 transitions. Second operand 13 states. [2020-07-19 22:44:50,553 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:44:52,225 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 501 [2020-07-19 22:44:53,379 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-19 22:44:54,510 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 504 [2020-07-19 22:44:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:44:59,554 INFO L93 Difference]: Finished difference Result 570 states and 775 transitions. [2020-07-19 22:44:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-19 22:44:59,555 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-07-19 22:44:59,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:44:59,558 INFO L225 Difference]: With dead ends: 570 [2020-07-19 22:44:59,558 INFO L226 Difference]: Without dead ends: 380 [2020-07-19 22:44:59,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2020-07-19 22:44:59,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-07-19 22:44:59,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 241. [2020-07-19 22:44:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-07-19 22:44:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 313 transitions. [2020-07-19 22:44:59,647 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 313 transitions. Word has length 138 [2020-07-19 22:44:59,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:44:59,647 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 313 transitions. [2020-07-19 22:44:59,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-19 22:44:59,647 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 313 transitions. [2020-07-19 22:44:59,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-19 22:44:59,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:44:59,649 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] [2020-07-19 22:44:59,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 22:44:59,650 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:44:59,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:44:59,650 INFO L82 PathProgramCache]: Analyzing trace with hash 903324488, now seen corresponding path program 1 times [2020-07-19 22:44:59,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:44:59,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252559857] [2020-07-19 22:44:59,651 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:44:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:00,893 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:45:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:45:01,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252559857] [2020-07-19 22:45:01,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:45:01,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-19 22:45:01,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159987184] [2020-07-19 22:45:01,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 22:45:01,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:45:01,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 22:45:01,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-19 22:45:01,144 INFO L87 Difference]: Start difference. First operand 241 states and 313 transitions. Second operand 12 states. [2020-07-19 22:45:03,224 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:45:04,437 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:45:05,631 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:45:07,352 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 503 [2020-07-19 22:45:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:45:11,728 INFO L93 Difference]: Finished difference Result 609 states and 859 transitions. [2020-07-19 22:45:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 22:45:11,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-07-19 22:45:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:45:11,734 INFO L225 Difference]: With dead ends: 609 [2020-07-19 22:45:11,734 INFO L226 Difference]: Without dead ends: 457 [2020-07-19 22:45:11,735 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 [2020-07-19 22:45:11,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-07-19 22:45:11,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 291. [2020-07-19 22:45:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-07-19 22:45:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 406 transitions. [2020-07-19 22:45:11,830 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 406 transitions. Word has length 139 [2020-07-19 22:45:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:45:11,830 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 406 transitions. [2020-07-19 22:45:11,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-19 22:45:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 406 transitions. [2020-07-19 22:45:11,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-07-19 22:45:11,832 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:45:11,833 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] [2020-07-19 22:45:11,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 22:45:11,833 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:45:11,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:45:11,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2066679306, now seen corresponding path program 1 times [2020-07-19 22:45:11,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:45:11,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447329227] [2020-07-19 22:45:11,834 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:45:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,200 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:45:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-19 22:45:13,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447329227] [2020-07-19 22:45:13,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:45:13,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:45:13,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83979883] [2020-07-19 22:45:13,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:45:13,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:45:13,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:45:13,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:45:13,397 INFO L87 Difference]: Start difference. First operand 291 states and 406 transitions. Second operand 9 states. [2020-07-19 22:45:15,532 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:45:19,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:45:19,319 INFO L93 Difference]: Finished difference Result 773 states and 1163 transitions. [2020-07-19 22:45:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 22:45:19,320 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2020-07-19 22:45:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:45:19,324 INFO L225 Difference]: With dead ends: 773 [2020-07-19 22:45:19,324 INFO L226 Difference]: Without dead ends: 555 [2020-07-19 22:45:19,325 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 [2020-07-19 22:45:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-07-19 22:45:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 342. [2020-07-19 22:45:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-07-19 22:45:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 495 transitions. [2020-07-19 22:45:19,458 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 495 transitions. Word has length 141 [2020-07-19 22:45:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:45:19,458 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 495 transitions. [2020-07-19 22:45:19,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:45:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 495 transitions. [2020-07-19 22:45:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-19 22:45:19,461 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:45:19,461 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] [2020-07-19 22:45:19,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-19 22:45:19,462 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:45:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:45:19,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1707635542, now seen corresponding path program 1 times [2020-07-19 22:45:19,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:45:19,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694612075] [2020-07-19 22:45:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:45:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,757 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:45:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:20,949 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:45:20,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694612075] [2020-07-19 22:45:20,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306504071] [2020-07-19 22:45:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@396aadec No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 22:45:21,391 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@396aadec issued 2 check-sat command(s) [2020-07-19 22:45:21,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 22:45:21,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-19 22:45:21,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 22:45:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:45:21,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 22:45:21,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 12 [2020-07-19 22:45:21,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199718042] [2020-07-19 22:45:21,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 22:45:21,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:45:21,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 22:45:21,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-19 22:45:21,444 INFO L87 Difference]: Start difference. First operand 342 states and 495 transitions. Second operand 12 states. [2020-07-19 22:45:23,579 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:45:24,780 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:45:26,030 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:45:30,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:45:30,774 INFO L93 Difference]: Finished difference Result 873 states and 1347 transitions. [2020-07-19 22:45:30,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-19 22:45:30,779 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 142 [2020-07-19 22:45:30,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:45:30,783 INFO L225 Difference]: With dead ends: 873 [2020-07-19 22:45:30,784 INFO L226 Difference]: Without dead ends: 757 [2020-07-19 22:45:30,785 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 [2020-07-19 22:45:30,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-07-19 22:45:30,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 442. [2020-07-19 22:45:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-07-19 22:45:30,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 677 transitions. [2020-07-19 22:45:30,971 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 677 transitions. Word has length 142 [2020-07-19 22:45:30,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:45:30,971 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 677 transitions. [2020-07-19 22:45:30,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-19 22:45:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 677 transitions. [2020-07-19 22:45:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-19 22:45:30,974 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:45:30,974 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] [2020-07-19 22:45:31,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 22:45:31,189 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:45:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:45:31,190 INFO L82 PathProgramCache]: Analyzing trace with hash -492606537, now seen corresponding path program 1 times [2020-07-19 22:45:31,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:45:31,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712204055] [2020-07-19 22:45:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:45:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,459 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:45:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:45:32,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712204055] [2020-07-19 22:45:32,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:45:32,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:45:32,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935452908] [2020-07-19 22:45:32,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:45:32,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:45:32,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:45:32,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:45:32,670 INFO L87 Difference]: Start difference. First operand 442 states and 677 transitions. Second operand 9 states. [2020-07-19 22:45:34,691 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:45:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:45:38,723 INFO L93 Difference]: Finished difference Result 906 states and 1394 transitions. [2020-07-19 22:45:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 22:45:38,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2020-07-19 22:45:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:45:38,727 INFO L225 Difference]: With dead ends: 906 [2020-07-19 22:45:38,727 INFO L226 Difference]: Without dead ends: 657 [2020-07-19 22:45:38,729 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 [2020-07-19 22:45:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-07-19 22:45:38,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 397. [2020-07-19 22:45:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-07-19 22:45:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 588 transitions. [2020-07-19 22:45:38,939 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 588 transitions. Word has length 142 [2020-07-19 22:45:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:45:38,939 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 588 transitions. [2020-07-19 22:45:38,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:45:38,940 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 588 transitions. [2020-07-19 22:45:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-19 22:45:38,941 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:45:38,942 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] [2020-07-19 22:45:38,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-19 22:45:38,942 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:45:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:45:38,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1788952943, now seen corresponding path program 1 times [2020-07-19 22:45:38,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:45:38,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79391700] [2020-07-19 22:45:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:45:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,116 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:45:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:45:40,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79391700] [2020-07-19 22:45:40,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:45:40,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:45:40,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563987483] [2020-07-19 22:45:40,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:45:40,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:45:40,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:45:40,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:45:40,319 INFO L87 Difference]: Start difference. First operand 397 states and 588 transitions. Second operand 9 states. [2020-07-19 22:45:42,266 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:45:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:45:46,125 INFO L93 Difference]: Finished difference Result 1192 states and 1910 transitions. [2020-07-19 22:45:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 22:45:46,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-07-19 22:45:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:45:46,135 INFO L225 Difference]: With dead ends: 1192 [2020-07-19 22:45:46,135 INFO L226 Difference]: Without dead ends: 886 [2020-07-19 22:45:46,136 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 [2020-07-19 22:45:46,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-07-19 22:45:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 525. [2020-07-19 22:45:46,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-07-19 22:45:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 808 transitions. [2020-07-19 22:45:46,422 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 808 transitions. Word has length 143 [2020-07-19 22:45:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:45:46,422 INFO L479 AbstractCegarLoop]: Abstraction has 525 states and 808 transitions. [2020-07-19 22:45:46,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:45:46,422 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 808 transitions. [2020-07-19 22:45:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-07-19 22:45:46,424 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:45:46,424 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] [2020-07-19 22:45:46,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-19 22:45:46,425 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:45:46,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:45:46,425 INFO L82 PathProgramCache]: Analyzing trace with hash -2070588427, now seen corresponding path program 1 times [2020-07-19 22:45:46,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:45:46,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381430962] [2020-07-19 22:45:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:45:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,610 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:45:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:45:47,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381430962] [2020-07-19 22:45:47,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:45:47,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:45:47,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633785212] [2020-07-19 22:45:47,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:45:47,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:45:47,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:45:47,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:45:47,782 INFO L87 Difference]: Start difference. First operand 525 states and 808 transitions. Second operand 9 states. [2020-07-19 22:45:49,755 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:45:53,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:45:53,847 INFO L93 Difference]: Finished difference Result 1713 states and 2832 transitions. [2020-07-19 22:45:53,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 22:45:53,848 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 144 [2020-07-19 22:45:53,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:45:53,856 INFO L225 Difference]: With dead ends: 1713 [2020-07-19 22:45:53,856 INFO L226 Difference]: Without dead ends: 1301 [2020-07-19 22:45:53,858 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 [2020-07-19 22:45:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-07-19 22:45:54,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 747. [2020-07-19 22:45:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-07-19 22:45:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1188 transitions. [2020-07-19 22:45:54,523 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1188 transitions. Word has length 144 [2020-07-19 22:45:54,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:45:54,524 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 1188 transitions. [2020-07-19 22:45:54,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:45:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1188 transitions. [2020-07-19 22:45:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-19 22:45:54,526 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:45:54,527 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] [2020-07-19 22:45:54,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-19 22:45:54,527 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:45:54,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:45:54,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2144926737, now seen corresponding path program 1 times [2020-07-19 22:45:54,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:45:54,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963656314] [2020-07-19 22:45:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:45:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,716 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:45:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:45:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:45:55,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963656314] [2020-07-19 22:45:55,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:45:55,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:45:55,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64206977] [2020-07-19 22:45:55,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:45:55,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:45:55,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:45:55,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:45:55,911 INFO L87 Difference]: Start difference. First operand 747 states and 1188 transitions. Second operand 9 states. [2020-07-19 22:45:57,800 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:46:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:46:02,626 INFO L93 Difference]: Finished difference Result 2684 states and 4538 transitions. [2020-07-19 22:46:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 22:46:02,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 145 [2020-07-19 22:46:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:46:02,637 INFO L225 Difference]: With dead ends: 2684 [2020-07-19 22:46:02,637 INFO L226 Difference]: Without dead ends: 2078 [2020-07-19 22:46:02,639 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 [2020-07-19 22:46:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2020-07-19 22:46:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1151. [2020-07-19 22:46:03,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-07-19 22:46:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1876 transitions. [2020-07-19 22:46:03,526 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1876 transitions. Word has length 145 [2020-07-19 22:46:03,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:46:03,526 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1876 transitions. [2020-07-19 22:46:03,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:46:03,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1876 transitions. [2020-07-19 22:46:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-19 22:46:03,529 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:46:03,529 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] [2020-07-19 22:46:03,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-19 22:46:03,530 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:46:03,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:46:03,530 INFO L82 PathProgramCache]: Analyzing trace with hash -756078253, now seen corresponding path program 1 times [2020-07-19 22:46:03,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:46:03,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293763769] [2020-07-19 22:46:03,530 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:46:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,786 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:46:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:04,966 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:46:04,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293763769] [2020-07-19 22:46:04,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:46:04,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:46:04,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708067962] [2020-07-19 22:46:04,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:46:04,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:46:04,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:46:04,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:46:04,968 INFO L87 Difference]: Start difference. First operand 1151 states and 1876 transitions. Second operand 9 states. [2020-07-19 22:46:06,969 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:46:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:46:13,011 INFO L93 Difference]: Finished difference Result 4537 states and 7760 transitions. [2020-07-19 22:46:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 22:46:13,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 146 [2020-07-19 22:46:13,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:46:13,030 INFO L225 Difference]: With dead ends: 4537 [2020-07-19 22:46:13,030 INFO L226 Difference]: Without dead ends: 3561 [2020-07-19 22:46:13,034 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 [2020-07-19 22:46:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-07-19 22:46:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 1909. [2020-07-19 22:46:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1909 states. [2020-07-19 22:46:14,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 3156 transitions. [2020-07-19 22:46:14,395 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 3156 transitions. Word has length 146 [2020-07-19 22:46:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:46:14,395 INFO L479 AbstractCegarLoop]: Abstraction has 1909 states and 3156 transitions. [2020-07-19 22:46:14,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:46:14,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 3156 transitions. [2020-07-19 22:46:14,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-19 22:46:14,401 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:46:14,402 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] [2020-07-19 22:46:14,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-19 22:46:14,402 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:46:14,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:46:14,402 INFO L82 PathProgramCache]: Analyzing trace with hash -368501069, now seen corresponding path program 1 times [2020-07-19 22:46:14,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:46:14,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793603021] [2020-07-19 22:46:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:46:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,574 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:46:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:46:15,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793603021] [2020-07-19 22:46:15,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:46:15,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:46:15,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93523226] [2020-07-19 22:46:15,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:46:15,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:46:15,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:46:15,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:46:15,753 INFO L87 Difference]: Start difference. First operand 1909 states and 3156 transitions. Second operand 9 states. [2020-07-19 22:46:18,044 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:46:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:46:26,821 INFO L93 Difference]: Finished difference Result 8116 states and 13902 transitions. [2020-07-19 22:46:26,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 22:46:26,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 147 [2020-07-19 22:46:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:46:26,855 INFO L225 Difference]: With dead ends: 8116 [2020-07-19 22:46:26,855 INFO L226 Difference]: Without dead ends: 6422 [2020-07-19 22:46:26,863 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 [2020-07-19 22:46:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6422 states. [2020-07-19 22:46:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6422 to 3357. [2020-07-19 22:46:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3357 states. [2020-07-19 22:46:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 5572 transitions. [2020-07-19 22:46:30,143 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 5572 transitions. Word has length 147 [2020-07-19 22:46:30,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:46:30,143 INFO L479 AbstractCegarLoop]: Abstraction has 3357 states and 5572 transitions. [2020-07-19 22:46:30,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:46:30,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 5572 transitions. [2020-07-19 22:46:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-07-19 22:46:30,151 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:46:30,152 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] [2020-07-19 22:46:30,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-19 22:46:30,152 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:46:30,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:46:30,152 INFO L82 PathProgramCache]: Analyzing trace with hash -264665423, now seen corresponding path program 1 times [2020-07-19 22:46:30,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:46:30,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775023309] [2020-07-19 22:46:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:46:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,394 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:46:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:46:31,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775023309] [2020-07-19 22:46:31,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:46:31,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:46:31,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678703567] [2020-07-19 22:46:31,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:46:31,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:46:31,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:46:31,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:46:31,652 INFO L87 Difference]: Start difference. First operand 3357 states and 5572 transitions. Second operand 9 states. [2020-07-19 22:46:33,682 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:46:46,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:46:46,634 INFO L93 Difference]: Finished difference Result 15069 states and 25652 transitions. [2020-07-19 22:46:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 22:46:46,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2020-07-19 22:46:46,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:46:46,701 INFO L225 Difference]: With dead ends: 15069 [2020-07-19 22:46:46,701 INFO L226 Difference]: Without dead ends: 11973 [2020-07-19 22:46:46,720 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 [2020-07-19 22:46:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11973 states. [2020-07-19 22:46:54,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11973 to 6151. [2020-07-19 22:46:54,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6151 states. [2020-07-19 22:46:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6151 states to 6151 states and 10164 transitions. [2020-07-19 22:46:54,944 INFO L78 Accepts]: Start accepts. Automaton has 6151 states and 10164 transitions. Word has length 148 [2020-07-19 22:46:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:46:54,944 INFO L479 AbstractCegarLoop]: Abstraction has 6151 states and 10164 transitions. [2020-07-19 22:46:54,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:46:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6151 states and 10164 transitions. [2020-07-19 22:46:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-19 22:46:54,958 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:46:54,958 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] [2020-07-19 22:46:54,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-19 22:46:54,958 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:46:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:46:54,959 INFO L82 PathProgramCache]: Analyzing trace with hash -616576683, now seen corresponding path program 1 times [2020-07-19 22:46:54,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:46:54,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372232942] [2020-07-19 22:46:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:46:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,116 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:46:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:46:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:46:56,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372232942] [2020-07-19 22:46:56,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:46:56,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:46:56,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063785910] [2020-07-19 22:46:56,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:46:56,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:46:56,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:46:56,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:46:56,356 INFO L87 Difference]: Start difference. First operand 6151 states and 10164 transitions. Second operand 9 states. [2020-07-19 22:46:58,212 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:47:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:47:20,996 INFO L93 Difference]: Finished difference Result 28612 states and 48146 transitions. [2020-07-19 22:47:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 22:47:20,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 149 [2020-07-19 22:47:20,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:47:21,066 INFO L225 Difference]: With dead ends: 28612 [2020-07-19 22:47:21,066 INFO L226 Difference]: Without dead ends: 22774 [2020-07-19 22:47:21,090 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 [2020-07-19 22:47:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2020-07-19 22:47:31,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 11571. [2020-07-19 22:47:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11571 states. [2020-07-19 22:47:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11571 states to 11571 states and 18916 transitions. [2020-07-19 22:47:31,255 INFO L78 Accepts]: Start accepts. Automaton has 11571 states and 18916 transitions. Word has length 149 [2020-07-19 22:47:31,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:47:31,255 INFO L479 AbstractCegarLoop]: Abstraction has 11571 states and 18916 transitions. [2020-07-19 22:47:31,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:47:31,255 INFO L276 IsEmpty]: Start isEmpty. Operand 11571 states and 18916 transitions. [2020-07-19 22:47:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-19 22:47:31,281 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:47:31,281 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] [2020-07-19 22:47:31,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-19 22:47:31,282 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:47:31,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:47:31,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1426971217, now seen corresponding path program 2 times [2020-07-19 22:47:31,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:47:31,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911173009] [2020-07-19 22:47:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:47:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,549 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:47:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:47:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-19 22:47:32,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911173009] [2020-07-19 22:47:32,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:47:32,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-19 22:47:32,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978199086] [2020-07-19 22:47:32,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 22:47:32,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:47:32,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 22:47:32,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-19 22:47:32,769 INFO L87 Difference]: Start difference. First operand 11571 states and 18916 transitions. Second operand 12 states. [2020-07-19 22:47:34,590 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:47:35,875 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:47:37,058 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:47:38,970 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 503 [2020-07-19 22:48:04,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:48:04,668 INFO L93 Difference]: Finished difference Result 33940 states and 56238 transitions. [2020-07-19 22:48:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 22:48:04,669 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 150 [2020-07-19 22:48:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:48:04,735 INFO L225 Difference]: With dead ends: 33940 [2020-07-19 22:48:04,735 INFO L226 Difference]: Without dead ends: 22774 [2020-07-19 22:48:04,773 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 [2020-07-19 22:48:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2020-07-19 22:48:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 11571. [2020-07-19 22:48:15,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11571 states. [2020-07-19 22:48:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11571 states to 11571 states and 18659 transitions. [2020-07-19 22:48:15,295 INFO L78 Accepts]: Start accepts. Automaton has 11571 states and 18659 transitions. Word has length 150 [2020-07-19 22:48:15,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:48:15,296 INFO L479 AbstractCegarLoop]: Abstraction has 11571 states and 18659 transitions. [2020-07-19 22:48:15,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-19 22:48:15,296 INFO L276 IsEmpty]: Start isEmpty. Operand 11571 states and 18659 transitions. [2020-07-19 22:48:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-19 22:48:15,311 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:48:15,312 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] [2020-07-19 22:48:15,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-19 22:48:15,312 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:48:15,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:48:15,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1382435855, now seen corresponding path program 1 times [2020-07-19 22:48:15,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:48:15,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153527272] [2020-07-19 22:48:15,313 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:48:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,543 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:48:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:48:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:48:16,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153527272] [2020-07-19 22:48:16,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:48:16,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:48:16,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524098284] [2020-07-19 22:48:16,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:48:16,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:48:16,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:48:16,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:48:16,748 INFO L87 Difference]: Start difference. First operand 11571 states and 18659 transitions. Second operand 9 states. [2020-07-19 22:48:18,690 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:49:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:49:04,161 INFO L93 Difference]: Finished difference Result 55017 states and 89895 transitions. [2020-07-19 22:49:04,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 22:49:04,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 150 [2020-07-19 22:49:04,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:49:04,287 INFO L225 Difference]: With dead ends: 55017 [2020-07-19 22:49:04,288 INFO L226 Difference]: Without dead ends: 43817 [2020-07-19 22:49:04,331 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 [2020-07-19 22:49:04,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43817 states. [2020-07-19 22:49:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43817 to 22113. [2020-07-19 22:49:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22113 states. [2020-07-19 22:49:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22113 states to 22113 states and 35091 transitions. [2020-07-19 22:49:27,651 INFO L78 Accepts]: Start accepts. Automaton has 22113 states and 35091 transitions. Word has length 150 [2020-07-19 22:49:27,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:49:27,651 INFO L479 AbstractCegarLoop]: Abstraction has 22113 states and 35091 transitions. [2020-07-19 22:49:27,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:49:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 22113 states and 35091 transitions. [2020-07-19 22:49:27,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-19 22:49:27,676 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:49:27,676 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] [2020-07-19 22:49:27,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-19 22:49:27,677 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:49:27,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:49:27,677 INFO L82 PathProgramCache]: Analyzing trace with hash -163986702, now seen corresponding path program 1 times [2020-07-19 22:49:27,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:49:27,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246464567] [2020-07-19 22:49:27,678 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:49:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:28,920 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:49:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:49:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:49:29,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246464567] [2020-07-19 22:49:29,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020942741] [2020-07-19 22:49:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e7cc596 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 [2020-07-19 22:49:29,671 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e7cc596 issued 2 check-sat command(s) [2020-07-19 22:49:29,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 22:49:29,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-19 22:49:29,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 22:49:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-19 22:49:29,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 22:49:29,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2020-07-19 22:49:29,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118817463] [2020-07-19 22:49:29,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 22:49:29,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:49:29,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 22:49:29,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-07-19 22:49:29,782 INFO L87 Difference]: Start difference. First operand 22113 states and 35091 transitions. Second operand 5 states. [2020-07-19 22:49:52,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:49:52,375 INFO L93 Difference]: Finished difference Result 43837 states and 70181 transitions. [2020-07-19 22:49:52,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:49:52,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-07-19 22:49:52,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:49:52,446 INFO L225 Difference]: With dead ends: 43837 [2020-07-19 22:49:52,447 INFO L226 Difference]: Without dead ends: 22113 [2020-07-19 22:49:52,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-07-19 22:49:52,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22113 states. [2020-07-19 22:50:16,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22113 to 22113. [2020-07-19 22:50:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22113 states. [2020-07-19 22:50:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22113 states to 22113 states and 35090 transitions. [2020-07-19 22:50:16,152 INFO L78 Accepts]: Start accepts. Automaton has 22113 states and 35090 transitions. Word has length 156 [2020-07-19 22:50:16,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:50:16,152 INFO L479 AbstractCegarLoop]: Abstraction has 22113 states and 35090 transitions. [2020-07-19 22:50:16,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 22:50:16,152 INFO L276 IsEmpty]: Start isEmpty. Operand 22113 states and 35090 transitions. [2020-07-19 22:50:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-19 22:50:16,175 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:50:16,175 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] [2020-07-19 22:50:16,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 22:50:16,381 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:50:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:50:16,382 INFO L82 PathProgramCache]: Analyzing trace with hash 834897730, now seen corresponding path program 1 times [2020-07-19 22:50:16,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:50:16,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522889305] [2020-07-19 22:50:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:50:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,623 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:50:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:50:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:50:17,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522889305] [2020-07-19 22:50:17,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961949729] [2020-07-19 22:50:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3899ada1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 22:50:18,280 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3899ada1 issued 2 check-sat command(s) [2020-07-19 22:50:18,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 22:50:18,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-19 22:50:18,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 22:50:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:50:18,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 22:50:18,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 13 [2020-07-19 22:50:18,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080002916] [2020-07-19 22:50:18,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-19 22:50:18,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:50:18,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-19 22:50:18,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-07-19 22:50:18,326 INFO L87 Difference]: Start difference. First operand 22113 states and 35090 transitions. Second operand 13 states. [2020-07-19 22:50:20,734 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:50:22,178 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:50:23,430 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:50:24,959 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:51:18,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:51:18,506 INFO L93 Difference]: Finished difference Result 46237 states and 74397 transitions. [2020-07-19 22:51:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 22:51:18,507 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 151 [2020-07-19 22:51:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:51:18,647 INFO L225 Difference]: With dead ends: 46237 [2020-07-19 22:51:18,648 INFO L226 Difference]: Without dead ends: 46121 [2020-07-19 22:51:18,665 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 [2020-07-19 22:51:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46121 states. [2020-07-19 22:51:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46121 to 23745. [2020-07-19 22:51:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23745 states. [2020-07-19 22:51:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23745 states to 23745 states and 37420 transitions. [2020-07-19 22:51:45,502 INFO L78 Accepts]: Start accepts. Automaton has 23745 states and 37420 transitions. Word has length 151 [2020-07-19 22:51:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:51:45,503 INFO L479 AbstractCegarLoop]: Abstraction has 23745 states and 37420 transitions. [2020-07-19 22:51:45,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-19 22:51:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 23745 states and 37420 transitions. [2020-07-19 22:51:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-19 22:51:45,525 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:51:45,525 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] [2020-07-19 22:51:45,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 22:51:45,732 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:51:45,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:51:45,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2114657271, now seen corresponding path program 1 times [2020-07-19 22:51:45,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:51:45,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669747226] [2020-07-19 22:51:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:51:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:46,996 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:51:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:51:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:51:47,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669747226] [2020-07-19 22:51:47,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:51:47,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:51:47,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612052502] [2020-07-19 22:51:47,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:51:47,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:51:47,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:51:47,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:51:47,155 INFO L87 Difference]: Start difference. First operand 23745 states and 37420 transitions. Second operand 9 states. [2020-07-19 22:51:49,235 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 502 [2020-07-19 22:53:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:53:31,081 INFO L93 Difference]: Finished difference Result 87652 states and 140287 transitions. [2020-07-19 22:53:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 22:53:31,081 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-07-19 22:53:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:53:31,270 INFO L225 Difference]: With dead ends: 87652 [2020-07-19 22:53:31,271 INFO L226 Difference]: Without dead ends: 87536 [2020-07-19 22:53:31,299 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 [2020-07-19 22:53:31,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87536 states. [2020-07-19 22:54:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87536 to 44605. [2020-07-19 22:54:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44605 states. [2020-07-19 22:54:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44605 states to 44605 states and 69100 transitions. [2020-07-19 22:54:21,553 INFO L78 Accepts]: Start accepts. Automaton has 44605 states and 69100 transitions. Word has length 151 [2020-07-19 22:54:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:54:21,554 INFO L479 AbstractCegarLoop]: Abstraction has 44605 states and 69100 transitions. [2020-07-19 22:54:21,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:54:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 44605 states and 69100 transitions. [2020-07-19 22:54:21,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-19 22:54:21,584 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:54:21,584 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] [2020-07-19 22:54:21,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-19 22:54:21,584 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:54:21,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:54:21,585 INFO L82 PathProgramCache]: Analyzing trace with hash -437823123, now seen corresponding path program 1 times [2020-07-19 22:54:21,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:54:21,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285243911] [2020-07-19 22:54:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:54:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:22,958 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:54:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:54:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:54:23,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285243911] [2020-07-19 22:54:23,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:54:23,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-19 22:54:23,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132631340] [2020-07-19 22:54:23,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 22:54:23,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:54:23,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 22:54:23,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-19 22:54:23,260 INFO L87 Difference]: Start difference. First operand 44605 states and 69100 transitions. Second operand 12 states. [2020-07-19 22:54:24,821 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 501 [2020-07-19 22:56:13,132 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 503 [2020-07-19 22:56:14,418 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 503 [2020-07-19 22:56:15,715 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 503 [2020-07-19 22:56:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:56:17,719 INFO L93 Difference]: Finished difference Result 87641 states and 138143 transitions. [2020-07-19 22:56:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-19 22:56:17,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-07-19 22:56:17,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:56:17,911 INFO L225 Difference]: With dead ends: 87641 [2020-07-19 22:56:17,911 INFO L226 Difference]: Without dead ends: 87538 [2020-07-19 22:56:17,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-07-19 22:56:18,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87538 states. [2020-07-19 22:57:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87538 to 44609. [2020-07-19 22:57:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44609 states. [2020-07-19 22:57:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44609 states to 44609 states and 69104 transitions. [2020-07-19 22:57:09,137 INFO L78 Accepts]: Start accepts. Automaton has 44609 states and 69104 transitions. Word has length 152 [2020-07-19 22:57:09,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:57:09,137 INFO L479 AbstractCegarLoop]: Abstraction has 44609 states and 69104 transitions. [2020-07-19 22:57:09,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-19 22:57:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand 44609 states and 69104 transitions. [2020-07-19 22:57:09,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-19 22:57:09,177 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:57:09,177 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, 1] [2020-07-19 22:57:09,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-19 22:57:09,178 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:57:09,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:57:09,178 INFO L82 PathProgramCache]: Analyzing trace with hash 817261677, now seen corresponding path program 1 times [2020-07-19 22:57:09,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 22:57:09,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195614419] [2020-07-19 22:57:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bae3787 [2020-07-19 22:57:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,701 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 499 [2020-07-19 22:57:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:57:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 22:57:10,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195614419] [2020-07-19 22:57:10,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:57:10,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-19 22:57:10,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834315999] [2020-07-19 22:57:10,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 22:57:10,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 22:57:10,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 22:57:10,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-19 22:57:10,920 INFO L87 Difference]: Start difference. First operand 44609 states and 69104 transitions. Second operand 12 states. [2020-07-19 22:57:12,503 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 501