/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.02.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:39:15,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:39:15,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:39:15,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:39:15,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:39:15,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:39:15,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:39:15,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:39:15,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:39:15,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:39:15,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:39:15,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:39:15,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:39:15,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:39:15,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:39:15,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:39:15,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:39:15,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:39:15,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:39:15,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:39:15,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:39:15,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:39:15,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:39:15,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:39:15,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 21:39:15,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 21:39:15,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 21:39:15,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 21:39:15,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 21:39:15,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 21:39:15,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 21:39:15,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 21:39:15,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 21:39:15,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 21:39:15,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 21:39:15,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 21:39:15,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 21:39:15,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 21:39:15,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:39:15,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:39:15,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:39:15,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:39:15,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:39:15,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:39:15,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:39:15,530 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:39:15,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:39:15,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:39:15,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:39:15,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:39:15,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:39:15,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:39:15,532 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:39:15,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:39:15,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:39:15,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:39:15,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:39:15,534 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:39:15,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:39:15,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:39:15,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:39:15,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:39:15,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:39:15,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:39:15,535 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:39:15,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:39:15,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:39:15,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:39:15,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:39:15,961 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:39:15,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2021-02-21 21:39:16,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8f9f798/b64e420188bb4738b1b7639cda8e08ae/FLAG02b7c4767 [2021-02-21 21:39:16,874 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:39:16,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2021-02-21 21:39:16,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8f9f798/b64e420188bb4738b1b7639cda8e08ae/FLAG02b7c4767 [2021-02-21 21:39:17,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8f9f798/b64e420188bb4738b1b7639cda8e08ae [2021-02-21 21:39:17,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:39:17,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:39:17,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:39:17,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:39:17,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:39:17,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:39:17" (1/1) ... [2021-02-21 21:39:17,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8ff2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:39:17, skipping insertion in model container [2021-02-21 21:39:17,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:39:17" (1/1) ... [2021-02-21 21:39:17,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:39:17,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:39:17,440 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.02.cil-2.c[366,379] [2021-02-21 21:39:17,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:39:17,541 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:39:17,555 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.02.cil-2.c[366,379] [2021-02-21 21:39:17,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:39:17,639 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:39:17,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:39:17 WrapperNode [2021-02-21 21:39:17,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:39:17,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:39:17,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:39:17,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:39:17,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:39:17" (1/1) ... [2021-02-21 21:39:17,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:39:17" (1/1) ... [2021-02-21 21:39:17,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:39:17" (1/1) ... [2021-02-21 21:39:17,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:39:17" (1/1) ... [2021-02-21 21:39:17,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:39:17" (1/1) ... [2021-02-21 21:39:17,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:39:17" (1/1) ... [2021-02-21 21:39:17,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:39:17" (1/1) ... [2021-02-21 21:39:17,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:39:17,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:39:17,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:39:17,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:39:17,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:39:17" (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 [2021-02-21 21:39:17,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:39:17,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:39:17,832 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:39:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-02-21 21:39:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2021-02-21 21:39:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2021-02-21 21:39:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2021-02-21 21:39:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2021-02-21 21:39:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2021-02-21 21:39:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2021-02-21 21:39:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-02-21 21:39:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2021-02-21 21:39:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-02-21 21:39:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2021-02-21 21:39:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-02-21 21:39:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-02-21 21:39:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-02-21 21:39:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-02-21 21:39:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2021-02-21 21:39:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2021-02-21 21:39:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2021-02-21 21:39:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2021-02-21 21:39:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2021-02-21 21:39:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:39:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:39:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:39:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:39:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:39:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-02-21 21:39:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2021-02-21 21:39:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2021-02-21 21:39:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2021-02-21 21:39:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-02-21 21:39:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:39:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure master [2021-02-21 21:39:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2021-02-21 21:39:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2021-02-21 21:39:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-02-21 21:39:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2021-02-21 21:39:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-02-21 21:39:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2021-02-21 21:39:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-02-21 21:39:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-02-21 21:39:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-02-21 21:39:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2021-02-21 21:39:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2021-02-21 21:39:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2021-02-21 21:39:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2021-02-21 21:39:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2021-02-21 21:39:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:39:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:39:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:39:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:39:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:39:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:39:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:39:18,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:39:18,631 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 21:39:18,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:39:18 BoogieIcfgContainer [2021-02-21 21:39:18,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:39:18,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:39:18,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:39:18,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:39:18,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:39:17" (1/3) ... [2021-02-21 21:39:18,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c703f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:39:18, skipping insertion in model container [2021-02-21 21:39:18,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:39:17" (2/3) ... [2021-02-21 21:39:18,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c703f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:39:18, skipping insertion in model container [2021-02-21 21:39:18,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:39:18" (3/3) ... [2021-02-21 21:39:18,652 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.02.cil-2.c [2021-02-21 21:39:18,661 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:39:18,670 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:39:18,694 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:39:18,730 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:39:18,731 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:39:18,731 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:39:18,731 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:39:18,731 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:39:18,731 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:39:18,732 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:39:18,733 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:39:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2021-02-21 21:39:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-02-21 21:39:18,821 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:39:18,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:39:18,825 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:39:18,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:39:18,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2095587415, now seen corresponding path program 1 times [2021-02-21 21:39:18,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:39:18,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672368432] [2021-02-21 21:39:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:39:18,960 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:39:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:19,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:19,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:19,522 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-02-21 21:39:19,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:19,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:39:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:39:19,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:39:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:19,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:39:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-21 21:39:19,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:39:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:19,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:39:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:19,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:19,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:19,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:39:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:19,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:39:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:19,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:39:19,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672368432] [2021-02-21 21:39:19,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:39:19,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 21:39:19,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475938576] [2021-02-21 21:39:20,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 21:39:20,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:39:20,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 21:39:20,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 21:39:20,032 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 8 states. [2021-02-21 21:39:22,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:39:22,341 INFO L93 Difference]: Finished difference Result 700 states and 937 transitions. [2021-02-21 21:39:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 21:39:22,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2021-02-21 21:39:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:39:22,361 INFO L225 Difference]: With dead ends: 700 [2021-02-21 21:39:22,362 INFO L226 Difference]: Without dead ends: 438 [2021-02-21 21:39:22,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:39:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-02-21 21:39:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 281. [2021-02-21 21:39:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-21 21:39:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 343 transitions. [2021-02-21 21:39:22,551 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 343 transitions. Word has length 142 [2021-02-21 21:39:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:39:22,551 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 343 transitions. [2021-02-21 21:39:22,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 21:39:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 343 transitions. [2021-02-21 21:39:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-02-21 21:39:22,555 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:39:22,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:39:22,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:39:22,556 INFO L428 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:39:22,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:39:22,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1382870025, now seen corresponding path program 1 times [2021-02-21 21:39:22,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:39:22,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034770902] [2021-02-21 21:39:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:39:22,561 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:39:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:22,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:39:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:39:22,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:39:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:39:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-21 21:39:22,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:39:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:39:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:39:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:39:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:22,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:39:22,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034770902] [2021-02-21 21:39:22,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:39:22,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 21:39:22,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260307631] [2021-02-21 21:39:22,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 21:39:22,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:39:22,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 21:39:22,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 21:39:22,882 INFO L87 Difference]: Start difference. First operand 281 states and 343 transitions. Second operand 8 states. [2021-02-21 21:39:24,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:39:24,901 INFO L93 Difference]: Finished difference Result 668 states and 854 transitions. [2021-02-21 21:39:24,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 21:39:24,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2021-02-21 21:39:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:39:24,907 INFO L225 Difference]: With dead ends: 668 [2021-02-21 21:39:24,908 INFO L226 Difference]: Without dead ends: 437 [2021-02-21 21:39:24,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:39:24,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-02-21 21:39:24,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 280. [2021-02-21 21:39:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2021-02-21 21:39:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 341 transitions. [2021-02-21 21:39:24,996 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 341 transitions. Word has length 142 [2021-02-21 21:39:24,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:39:24,997 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 341 transitions. [2021-02-21 21:39:24,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 21:39:24,997 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 341 transitions. [2021-02-21 21:39:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-02-21 21:39:24,999 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:39:25,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:39:25,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:39:25,000 INFO L428 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:39:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:39:25,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1544083351, now seen corresponding path program 1 times [2021-02-21 21:39:25,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:39:25,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084523674] [2021-02-21 21:39:25,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:39:25,004 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:39:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:25,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:25,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:25,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:25,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:25,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:25,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:39:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:39:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:39:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:39:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:39:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:39:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:39:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:25,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:39:25,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084523674] [2021-02-21 21:39:25,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:39:25,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 21:39:25,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012514022] [2021-02-21 21:39:25,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 21:39:25,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:39:25,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 21:39:25,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:39:25,440 INFO L87 Difference]: Start difference. First operand 280 states and 341 transitions. Second operand 7 states. [2021-02-21 21:39:27,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:39:27,985 INFO L93 Difference]: Finished difference Result 1005 states and 1305 transitions. [2021-02-21 21:39:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 21:39:27,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2021-02-21 21:39:27,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:39:28,003 INFO L225 Difference]: With dead ends: 1005 [2021-02-21 21:39:28,003 INFO L226 Difference]: Without dead ends: 779 [2021-02-21 21:39:28,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-02-21 21:39:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2021-02-21 21:39:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 527. [2021-02-21 21:39:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2021-02-21 21:39:28,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 649 transitions. [2021-02-21 21:39:28,221 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 649 transitions. Word has length 142 [2021-02-21 21:39:28,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:39:28,225 INFO L480 AbstractCegarLoop]: Abstraction has 527 states and 649 transitions. [2021-02-21 21:39:28,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 21:39:28,225 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 649 transitions. [2021-02-21 21:39:28,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-02-21 21:39:28,233 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:39:28,234 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-21 21:39:28,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:39:28,234 INFO L428 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:39:28,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:39:28,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1160647897, now seen corresponding path program 1 times [2021-02-21 21:39:28,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:39:28,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169408107] [2021-02-21 21:39:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:39:28,244 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:39:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:28,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:28,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:28,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:28,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:39:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:39:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:39:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:39:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:39:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:39:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:39:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 21:39:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:28,595 WARN L141 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size [2021-02-21 21:39:28,598 WARN L147 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size 14 [2021-02-21 21:39:28,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:39:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:39:28,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-02-21 21:39:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:28,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-02-21 21:39:28,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169408107] [2021-02-21 21:39:28,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:39:28,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 21:39:28,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375030348] [2021-02-21 21:39:28,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 21:39:28,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:39:28,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 21:39:28,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:39:28,872 INFO L87 Difference]: Start difference. First operand 527 states and 649 transitions. Second operand 10 states. [2021-02-21 21:39:33,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:39:33,128 INFO L93 Difference]: Finished difference Result 2272 states and 3118 transitions. [2021-02-21 21:39:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 21:39:33,129 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 221 [2021-02-21 21:39:33,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:39:33,144 INFO L225 Difference]: With dead ends: 2272 [2021-02-21 21:39:33,144 INFO L226 Difference]: Without dead ends: 1800 [2021-02-21 21:39:33,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=241, Invalid=515, Unknown=0, NotChecked=0, Total=756 [2021-02-21 21:39:33,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2021-02-21 21:39:33,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1056. [2021-02-21 21:39:33,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2021-02-21 21:39:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1350 transitions. [2021-02-21 21:39:33,478 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1350 transitions. Word has length 221 [2021-02-21 21:39:33,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:39:33,479 INFO L480 AbstractCegarLoop]: Abstraction has 1056 states and 1350 transitions. [2021-02-21 21:39:33,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 21:39:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1350 transitions. [2021-02-21 21:39:33,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-02-21 21:39:33,484 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:39:33,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-21 21:39:33,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:39:33,485 INFO L428 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:39:33,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:39:33,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1615537273, now seen corresponding path program 1 times [2021-02-21 21:39:33,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:39:33,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149486164] [2021-02-21 21:39:33,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:39:33,489 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:39:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:33,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:39:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:39:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:39:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:39:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-21 21:39:33,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:39:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:39:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:39:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:39:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 21:39:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:39:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-02-21 21:39:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:33,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-02-21 21:39:33,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149486164] [2021-02-21 21:39:33,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:39:33,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:39:33,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747441417] [2021-02-21 21:39:33,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:39:33,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:39:33,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:39:33,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:39:33,811 INFO L87 Difference]: Start difference. First operand 1056 states and 1350 transitions. Second operand 9 states. [2021-02-21 21:39:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:39:36,190 INFO L93 Difference]: Finished difference Result 2588 states and 3405 transitions. [2021-02-21 21:39:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 21:39:36,191 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2021-02-21 21:39:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:39:36,204 INFO L225 Difference]: With dead ends: 2588 [2021-02-21 21:39:36,205 INFO L226 Difference]: Without dead ends: 1585 [2021-02-21 21:39:36,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-02-21 21:39:36,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-02-21 21:39:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1048. [2021-02-21 21:39:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2021-02-21 21:39:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1337 transitions. [2021-02-21 21:39:36,643 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1337 transitions. Word has length 221 [2021-02-21 21:39:36,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:39:36,643 INFO L480 AbstractCegarLoop]: Abstraction has 1048 states and 1337 transitions. [2021-02-21 21:39:36,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:39:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1337 transitions. [2021-02-21 21:39:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-02-21 21:39:36,649 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:39:36,649 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-21 21:39:36,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:39:36,650 INFO L428 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:39:36,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:39:36,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1159694162, now seen corresponding path program 1 times [2021-02-21 21:39:36,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:39:36,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049497535] [2021-02-21 21:39:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:39:36,654 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:39:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:36,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:36,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:36,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:36,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:39:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:39:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:39:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:36,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:39:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:39:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:36,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:39:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:39:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:36,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 21:39:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:36,948 WARN L141 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size [2021-02-21 21:39:36,948 WARN L147 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size 14 [2021-02-21 21:39:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:39:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:36,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:39:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:37,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:37,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:37,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:37,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:37,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:37,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:37,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:37,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:37,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:37,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:37,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:37,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-02-21 21:39:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:37,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:37,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:37,148 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-02-21 21:39:37,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049497535] [2021-02-21 21:39:37,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:39:37,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 21:39:37,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155488136] [2021-02-21 21:39:37,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 21:39:37,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:39:37,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 21:39:37,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:39:37,151 INFO L87 Difference]: Start difference. First operand 1048 states and 1337 transitions. Second operand 10 states. [2021-02-21 21:39:41,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:39:41,591 INFO L93 Difference]: Finished difference Result 4551 states and 6614 transitions. [2021-02-21 21:39:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 21:39:41,592 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 226 [2021-02-21 21:39:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:39:41,623 INFO L225 Difference]: With dead ends: 4551 [2021-02-21 21:39:41,623 INFO L226 Difference]: Without dead ends: 3557 [2021-02-21 21:39:41,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=241, Invalid=515, Unknown=0, NotChecked=0, Total=756 [2021-02-21 21:39:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-02-21 21:39:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2133. [2021-02-21 21:39:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2021-02-21 21:39:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 2848 transitions. [2021-02-21 21:39:42,237 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 2848 transitions. Word has length 226 [2021-02-21 21:39:42,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:39:42,238 INFO L480 AbstractCegarLoop]: Abstraction has 2133 states and 2848 transitions. [2021-02-21 21:39:42,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 21:39:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 2848 transitions. [2021-02-21 21:39:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-02-21 21:39:42,244 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:39:42,245 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-21 21:39:42,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:39:42,245 INFO L428 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:39:42,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:39:42,246 INFO L82 PathProgramCache]: Analyzing trace with hash 430932647, now seen corresponding path program 1 times [2021-02-21 21:39:42,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:39:42,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535546345] [2021-02-21 21:39:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:39:42,249 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:39:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:42,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:42,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:42,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:39:42,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:39:42,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:39:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:39:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:39:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:39:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:39:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:39:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:39:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 21:39:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:42,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:39:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 21:39:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:42,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:42,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-02-21 21:39:42,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535546345] [2021-02-21 21:39:42,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:39:42,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:39:42,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162922553] [2021-02-21 21:39:42,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:39:42,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:39:42,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:39:42,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:39:42,617 INFO L87 Difference]: Start difference. First operand 2133 states and 2848 transitions. Second operand 11 states. [2021-02-21 21:39:51,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:39:51,727 INFO L93 Difference]: Finished difference Result 11367 states and 16172 transitions. [2021-02-21 21:39:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-21 21:39:51,728 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 231 [2021-02-21 21:39:51,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:39:51,792 INFO L225 Difference]: With dead ends: 11367 [2021-02-21 21:39:51,793 INFO L226 Difference]: Without dead ends: 9286 [2021-02-21 21:39:51,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=566, Invalid=2296, Unknown=0, NotChecked=0, Total=2862 [2021-02-21 21:39:51,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9286 states. [2021-02-21 21:39:53,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9286 to 7078. [2021-02-21 21:39:53,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7078 states. [2021-02-21 21:39:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7078 states to 7078 states and 9447 transitions. [2021-02-21 21:39:53,811 INFO L78 Accepts]: Start accepts. Automaton has 7078 states and 9447 transitions. Word has length 231 [2021-02-21 21:39:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:39:53,812 INFO L480 AbstractCegarLoop]: Abstraction has 7078 states and 9447 transitions. [2021-02-21 21:39:53,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:39:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 7078 states and 9447 transitions. [2021-02-21 21:39:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-02-21 21:39:53,827 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:39:53,827 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:39:53,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 21:39:53,828 INFO L428 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:39:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:39:53,828 INFO L82 PathProgramCache]: Analyzing trace with hash -135971754, now seen corresponding path program 1 times [2021-02-21 21:39:53,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:39:53,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348431175] [2021-02-21 21:39:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:39:53,832 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:39:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:53,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:53,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:53,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:53,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:53,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:53,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:53,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:53,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:39:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:53,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:53,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:53,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:39:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:53,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:53,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:53,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:39:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:53,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:53,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:53,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:39:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:53,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:53,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:53,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:39:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:53,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:53,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:53,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:53,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:53,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:53,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:39:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:53,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:53,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:39:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:39:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:39:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 21:39:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:39:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:39:54,061 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 21:39:54,061 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 21:39:54,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:39:54,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:39:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 21:39:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 21:39:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-02-21 21:39:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:39:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:39:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 21:39:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 21:39:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-02-21 21:39:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:54,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:54,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-21 21:39:54,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348431175] [2021-02-21 21:39:54,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:39:54,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 21:39:54,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969500612] [2021-02-21 21:39:54,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 21:39:54,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:39:54,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 21:39:54,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:39:54,243 INFO L87 Difference]: Start difference. First operand 7078 states and 9447 transitions. Second operand 12 states. [2021-02-21 21:39:55,012 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-02-21 21:40:00,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:40:00,175 INFO L93 Difference]: Finished difference Result 16747 states and 23456 transitions. [2021-02-21 21:40:00,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-21 21:40:00,176 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 287 [2021-02-21 21:40:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:40:00,243 INFO L225 Difference]: With dead ends: 16747 [2021-02-21 21:40:00,243 INFO L226 Difference]: Without dead ends: 9722 [2021-02-21 21:40:00,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2021-02-21 21:40:00,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9722 states. [2021-02-21 21:40:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9722 to 7280. [2021-02-21 21:40:02,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7280 states. [2021-02-21 21:40:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7280 states to 7280 states and 9628 transitions. [2021-02-21 21:40:02,536 INFO L78 Accepts]: Start accepts. Automaton has 7280 states and 9628 transitions. Word has length 287 [2021-02-21 21:40:02,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:40:02,537 INFO L480 AbstractCegarLoop]: Abstraction has 7280 states and 9628 transitions. [2021-02-21 21:40:02,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 21:40:02,537 INFO L276 IsEmpty]: Start isEmpty. Operand 7280 states and 9628 transitions. [2021-02-21 21:40:02,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-02-21 21:40:02,547 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:40:02,548 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:40:02,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 21:40:02,548 INFO L428 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:40:02,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:40:02,549 INFO L82 PathProgramCache]: Analyzing trace with hash 260210443, now seen corresponding path program 1 times [2021-02-21 21:40:02,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:40:02,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047654405] [2021-02-21 21:40:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:40:02,552 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:40:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:02,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:02,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:02,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:02,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:02,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:40:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:40:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:40:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:40:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:40:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:40:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:40:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:40:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:40:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 21:40:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:40:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:40:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:40:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-02-21 21:40:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:02,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:40:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-21 21:40:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-21 21:40:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 21:40:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-21 21:40:02,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-21 21:40:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-02-21 21:40:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:02,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:02,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:40:02,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047654405] [2021-02-21 21:40:02,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:40:02,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:40:02,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109416017] [2021-02-21 21:40:03,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:40:03,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:40:03,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:40:03,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:40:03,001 INFO L87 Difference]: Start difference. First operand 7280 states and 9628 transitions. Second operand 11 states. [2021-02-21 21:40:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:40:11,073 INFO L93 Difference]: Finished difference Result 21179 states and 29882 transitions. [2021-02-21 21:40:11,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-21 21:40:11,073 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 287 [2021-02-21 21:40:11,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:40:11,156 INFO L225 Difference]: With dead ends: 21179 [2021-02-21 21:40:11,156 INFO L226 Difference]: Without dead ends: 13952 [2021-02-21 21:40:11,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2021-02-21 21:40:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13952 states. [2021-02-21 21:40:14,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13952 to 11030. [2021-02-21 21:40:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11030 states. [2021-02-21 21:40:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11030 states to 11030 states and 14338 transitions. [2021-02-21 21:40:14,411 INFO L78 Accepts]: Start accepts. Automaton has 11030 states and 14338 transitions. Word has length 287 [2021-02-21 21:40:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:40:14,412 INFO L480 AbstractCegarLoop]: Abstraction has 11030 states and 14338 transitions. [2021-02-21 21:40:14,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:40:14,412 INFO L276 IsEmpty]: Start isEmpty. Operand 11030 states and 14338 transitions. [2021-02-21 21:40:14,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-02-21 21:40:14,426 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:40:14,427 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:40:14,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 21:40:14,427 INFO L428 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:40:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:40:14,428 INFO L82 PathProgramCache]: Analyzing trace with hash -346049346, now seen corresponding path program 1 times [2021-02-21 21:40:14,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:40:14,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886982117] [2021-02-21 21:40:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:40:14,431 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:40:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:14,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:14,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:14,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:14,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:14,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:40:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:40:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:40:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:40:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:40:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:40:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:40:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:40:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:40:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 21:40:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:40:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:40:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:40:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 21:40:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:14,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:40:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-21 21:40:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-21 21:40:14,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 21:40:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-21 21:40:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-21 21:40:14,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-02-21 21:40:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:14,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:14,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:40:14,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886982117] [2021-02-21 21:40:14,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:40:14,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:40:14,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272006502] [2021-02-21 21:40:14,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:40:14,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:40:14,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:40:14,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:40:14,835 INFO L87 Difference]: Start difference. First operand 11030 states and 14338 transitions. Second operand 11 states. [2021-02-21 21:40:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:40:24,988 INFO L93 Difference]: Finished difference Result 31903 states and 44425 transitions. [2021-02-21 21:40:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-21 21:40:24,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 287 [2021-02-21 21:40:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:40:25,110 INFO L225 Difference]: With dead ends: 31903 [2021-02-21 21:40:25,110 INFO L226 Difference]: Without dead ends: 20926 [2021-02-21 21:40:25,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2021-02-21 21:40:25,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20926 states. [2021-02-21 21:40:29,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20926 to 16116. [2021-02-21 21:40:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16116 states. [2021-02-21 21:40:30,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16116 states to 16116 states and 20622 transitions. [2021-02-21 21:40:30,017 INFO L78 Accepts]: Start accepts. Automaton has 16116 states and 20622 transitions. Word has length 287 [2021-02-21 21:40:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:40:30,018 INFO L480 AbstractCegarLoop]: Abstraction has 16116 states and 20622 transitions. [2021-02-21 21:40:30,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:40:30,018 INFO L276 IsEmpty]: Start isEmpty. Operand 16116 states and 20622 transitions. [2021-02-21 21:40:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-02-21 21:40:30,042 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:40:30,042 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-21 21:40:30,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 21:40:30,043 INFO L428 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:40:30,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:40:30,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2128179390, now seen corresponding path program 1 times [2021-02-21 21:40:30,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:40:30,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080042526] [2021-02-21 21:40:30,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:40:30,047 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:40:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:30,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:30,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:30,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:40:30,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:40:30,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:40:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:40:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:40:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:40:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:40:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:40:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:40:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:40:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:40:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 21:40:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:40:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:40:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:40:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 21:40:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:30,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-02-21 21:40:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-02-21 21:40:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:40:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 21:40:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-21 21:40:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-02-21 21:40:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:30,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:30,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:30,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:40:30,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080042526] [2021-02-21 21:40:30,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:40:30,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:40:30,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602899128] [2021-02-21 21:40:30,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:40:30,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:40:30,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:40:30,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:40:30,454 INFO L87 Difference]: Start difference. First operand 16116 states and 20622 transitions. Second operand 11 states. [2021-02-21 21:40:35,905 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-02-21 21:40:43,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:40:43,575 INFO L93 Difference]: Finished difference Result 32631 states and 42911 transitions. [2021-02-21 21:40:43,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-02-21 21:40:43,576 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 322 [2021-02-21 21:40:43,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:40:43,690 INFO L225 Difference]: With dead ends: 32631 [2021-02-21 21:40:43,690 INFO L226 Difference]: Without dead ends: 21857 [2021-02-21 21:40:43,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=808, Invalid=2614, Unknown=0, NotChecked=0, Total=3422 [2021-02-21 21:40:43,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21857 states. [2021-02-21 21:40:48,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21857 to 16760. [2021-02-21 21:40:48,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16760 states. [2021-02-21 21:40:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16760 states to 16760 states and 21062 transitions. [2021-02-21 21:40:48,629 INFO L78 Accepts]: Start accepts. Automaton has 16760 states and 21062 transitions. Word has length 322 [2021-02-21 21:40:48,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:40:48,630 INFO L480 AbstractCegarLoop]: Abstraction has 16760 states and 21062 transitions. [2021-02-21 21:40:48,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:40:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand 16760 states and 21062 transitions. [2021-02-21 21:40:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-02-21 21:40:48,653 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:40:48,653 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-21 21:40:48,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 21:40:48,653 INFO L428 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:40:48,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:40:48,654 INFO L82 PathProgramCache]: Analyzing trace with hash -635037116, now seen corresponding path program 1 times [2021-02-21 21:40:48,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:40:48,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753242056] [2021-02-21 21:40:48,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:40:48,657 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:40:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:48,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:48,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:48,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:40:48,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:40:48,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:40:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:40:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:40:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:40:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:40:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:40:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:40:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:40:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:40:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 21:40:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:40:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:40:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:40:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-02-21 21:40:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-02-21 21:40:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:40:48,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-02-21 21:40:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:40:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:40:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:40:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 21:40:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 21:40:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:48,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-02-21 21:40:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:40:48,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:40:48,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:40:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:40:49,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753242056] [2021-02-21 21:40:49,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:40:49,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 21:40:49,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582773050] [2021-02-21 21:40:49,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 21:40:49,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:40:49,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 21:40:49,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:40:49,046 INFO L87 Difference]: Start difference. First operand 16760 states and 21062 transitions. Second operand 12 states. [2021-02-21 21:41:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:41:02,304 INFO L93 Difference]: Finished difference Result 32099 states and 41162 transitions. [2021-02-21 21:41:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-02-21 21:41:02,305 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 322 [2021-02-21 21:41:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:41:02,502 INFO L225 Difference]: With dead ends: 32099 [2021-02-21 21:41:02,502 INFO L226 Difference]: Without dead ends: 20691 [2021-02-21 21:41:02,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=810, Invalid=3612, Unknown=0, NotChecked=0, Total=4422 [2021-02-21 21:41:02,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20691 states. [2021-02-21 21:41:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20691 to 17064. [2021-02-21 21:41:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17064 states. [2021-02-21 21:41:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17064 states to 17064 states and 20930 transitions. [2021-02-21 21:41:07,148 INFO L78 Accepts]: Start accepts. Automaton has 17064 states and 20930 transitions. Word has length 322 [2021-02-21 21:41:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:41:07,149 INFO L480 AbstractCegarLoop]: Abstraction has 17064 states and 20930 transitions. [2021-02-21 21:41:07,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 21:41:07,149 INFO L276 IsEmpty]: Start isEmpty. Operand 17064 states and 20930 transitions. [2021-02-21 21:41:07,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-02-21 21:41:07,167 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:41:07,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-21 21:41:07,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 21:41:07,168 INFO L428 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:41:07,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:41:07,168 INFO L82 PathProgramCache]: Analyzing trace with hash 142560896, now seen corresponding path program 1 times [2021-02-21 21:41:07,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:41:07,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521382510] [2021-02-21 21:41:07,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:41:07,172 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:41:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:07,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:07,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:07,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:07,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:41:07,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:41:07,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:41:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:07,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:41:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:41:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:41:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:41:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:41:07,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:41:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:41:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:41:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:41:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:41:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:41:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:41:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 21:41:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 21:41:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-21 21:41:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:41:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:41:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:41:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:41:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-21 21:41:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-02-21 21:41:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:07,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:41:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:41:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:41:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:41:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:41:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:41:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 21:41:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 21:41:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-02-21 21:41:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:07,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:07,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:41:07,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521382510] [2021-02-21 21:41:07,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:41:07,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:41:07,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244420199] [2021-02-21 21:41:07,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:41:07,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:41:07,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:41:07,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:41:07,638 INFO L87 Difference]: Start difference. First operand 17064 states and 20930 transitions. Second operand 13 states. [2021-02-21 21:41:07,977 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2021-02-21 21:41:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:41:26,673 INFO L93 Difference]: Finished difference Result 52747 states and 68366 transitions. [2021-02-21 21:41:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-02-21 21:41:26,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 329 [2021-02-21 21:41:26,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:41:26,847 INFO L225 Difference]: With dead ends: 52747 [2021-02-21 21:41:26,847 INFO L226 Difference]: Without dead ends: 35735 [2021-02-21 21:41:26,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2240 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1196, Invalid=5284, Unknown=0, NotChecked=0, Total=6480 [2021-02-21 21:41:26,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35735 states. [2021-02-21 21:41:35,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35735 to 27513. [2021-02-21 21:41:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27513 states. [2021-02-21 21:41:35,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27513 states to 27513 states and 33097 transitions. [2021-02-21 21:41:35,503 INFO L78 Accepts]: Start accepts. Automaton has 27513 states and 33097 transitions. Word has length 329 [2021-02-21 21:41:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:41:35,504 INFO L480 AbstractCegarLoop]: Abstraction has 27513 states and 33097 transitions. [2021-02-21 21:41:35,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:41:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 27513 states and 33097 transitions. [2021-02-21 21:41:35,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-02-21 21:41:35,523 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:41:35,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-21 21:41:35,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 21:41:35,524 INFO L428 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:41:35,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:41:35,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1799025417, now seen corresponding path program 1 times [2021-02-21 21:41:35,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:41:35,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249849934] [2021-02-21 21:41:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:41:35,528 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:41:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:35,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:35,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:35,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:35,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:41:35,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:41:35,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:41:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:35,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:35,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:41:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:41:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:41:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:41:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:41:35,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:41:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:41:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:41:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:41:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:41:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:41:35,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:41:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 21:41:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 21:41:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-21 21:41:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:35,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:41:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:41:35,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:41:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:41:35,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:41:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:41:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:41:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:41:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-02-21 21:41:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:41:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:41:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:41:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 21:41:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-21 21:41:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:35,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-02-21 21:41:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:35,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:35,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:41:36,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249849934] [2021-02-21 21:41:36,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:41:36,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:41:36,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489824463] [2021-02-21 21:41:36,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:41:36,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:41:36,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:41:36,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:41:36,101 INFO L87 Difference]: Start difference. First operand 27513 states and 33097 transitions. Second operand 13 states. [2021-02-21 21:41:36,442 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2021-02-21 21:42:05,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:42:05,495 INFO L93 Difference]: Finished difference Result 92426 states and 118463 transitions. [2021-02-21 21:42:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-02-21 21:42:05,495 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 328 [2021-02-21 21:42:05,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:42:06,224 INFO L225 Difference]: With dead ends: 92426 [2021-02-21 21:42:06,226 INFO L226 Difference]: Without dead ends: 64965 [2021-02-21 21:42:06,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2640 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1293, Invalid=6189, Unknown=0, NotChecked=0, Total=7482 [2021-02-21 21:42:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64965 states. [2021-02-21 21:42:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64965 to 53212. [2021-02-21 21:42:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53212 states. [2021-02-21 21:42:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53212 states to 53212 states and 63247 transitions. [2021-02-21 21:42:22,974 INFO L78 Accepts]: Start accepts. Automaton has 53212 states and 63247 transitions. Word has length 328 [2021-02-21 21:42:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:42:22,975 INFO L480 AbstractCegarLoop]: Abstraction has 53212 states and 63247 transitions. [2021-02-21 21:42:22,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:42:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 53212 states and 63247 transitions. [2021-02-21 21:42:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-02-21 21:42:22,988 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:42:22,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-21 21:42:22,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-21 21:42:22,989 INFO L428 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:42:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:42:22,989 INFO L82 PathProgramCache]: Analyzing trace with hash 154057495, now seen corresponding path program 1 times [2021-02-21 21:42:22,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:42:22,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322697339] [2021-02-21 21:42:22,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:42:22,992 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:42:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:42:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:42:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:42:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:42:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:42:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:42:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:42:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:42:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:42:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:42:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 21:42:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 21:42:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-21 21:42:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:42:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:42:23,222 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 21:42:23,223 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 21:42:23,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:42:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:42:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:42:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:42:23,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:42:23,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-02-21 21:42:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:42:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:42:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 21:42:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-21 21:42:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-02-21 21:42:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:42:23,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322697339] [2021-02-21 21:42:23,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:42:23,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 21:42:23,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109873963] [2021-02-21 21:42:23,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 21:42:23,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:42:23,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 21:42:23,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:42:23,641 INFO L87 Difference]: Start difference. First operand 53212 states and 63247 transitions. Second operand 12 states. [2021-02-21 21:42:24,432 WARN L202 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-02-21 21:42:46,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:42:46,357 INFO L93 Difference]: Finished difference Result 114779 states and 139704 transitions. [2021-02-21 21:42:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 21:42:46,357 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 328 [2021-02-21 21:42:46,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:42:46,844 INFO L225 Difference]: With dead ends: 114779 [2021-02-21 21:42:46,845 INFO L226 Difference]: Without dead ends: 61620 [2021-02-21 21:42:46,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2021-02-21 21:42:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61620 states. [2021-02-21 21:43:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61620 to 51812. [2021-02-21 21:43:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51812 states. [2021-02-21 21:43:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51812 states to 51812 states and 60527 transitions. [2021-02-21 21:43:02,685 INFO L78 Accepts]: Start accepts. Automaton has 51812 states and 60527 transitions. Word has length 328 [2021-02-21 21:43:02,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:43:02,686 INFO L480 AbstractCegarLoop]: Abstraction has 51812 states and 60527 transitions. [2021-02-21 21:43:02,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 21:43:02,686 INFO L276 IsEmpty]: Start isEmpty. Operand 51812 states and 60527 transitions. [2021-02-21 21:43:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2021-02-21 21:43:02,709 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:43:02,710 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:43:02,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-21 21:43:02,710 INFO L428 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:43:02,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:43:02,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1987578412, now seen corresponding path program 1 times [2021-02-21 21:43:02,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:43:02,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257618443] [2021-02-21 21:43:02,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:43:02,714 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:43:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:02,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:02,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:02,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:02,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:02,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:02,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:02,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:02,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:02,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:02,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:02,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:43:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:02,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:02,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:02,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:02,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:02,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:43:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:02,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:02,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:02,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:43:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:02,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:02,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 21:43:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:02,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:02,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,032 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-02-21 21:43:03,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 21:43:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-21 21:43:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:43:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:43:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:43:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-02-21 21:43:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-02-21 21:43:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:03,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:03,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 21:43:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 21:43:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-21 21:43:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-21 21:43:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:03,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-02-21 21:43:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-02-21 21:43:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 21:43:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:43:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:43:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-21 21:43:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-02-21 21:43:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-02-21 21:43:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-02-21 21:43:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 21:43:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-02-21 21:43:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-02-21 21:43:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 21:43:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:43:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:43:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:43:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 21:43:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-02-21 21:43:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:43:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:43:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:43:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:43:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 21:43:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-02-21 21:43:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:43:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:43:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 21:43:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 21:43:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 21:43:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2021-02-21 21:43:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:03,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:03,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-02-21 21:43:03,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257618443] [2021-02-21 21:43:03,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:43:03,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 21:43:03,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904220355] [2021-02-21 21:43:03,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 21:43:03,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:43:03,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 21:43:03,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-02-21 21:43:03,756 INFO L87 Difference]: Start difference. First operand 51812 states and 60527 transitions. Second operand 15 states. [2021-02-21 21:43:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:43:11,744 INFO L93 Difference]: Finished difference Result 63496 states and 74163 transitions. [2021-02-21 21:43:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-21 21:43:11,745 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 510 [2021-02-21 21:43:11,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:43:11,798 INFO L225 Difference]: With dead ends: 63496 [2021-02-21 21:43:11,798 INFO L226 Difference]: Without dead ends: 11738 [2021-02-21 21:43:11,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=754, Invalid=2326, Unknown=0, NotChecked=0, Total=3080 [2021-02-21 21:43:11,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11738 states. [2021-02-21 21:43:14,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11738 to 9747. [2021-02-21 21:43:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9747 states. [2021-02-21 21:43:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9747 states to 9747 states and 10990 transitions. [2021-02-21 21:43:14,741 INFO L78 Accepts]: Start accepts. Automaton has 9747 states and 10990 transitions. Word has length 510 [2021-02-21 21:43:14,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:43:14,742 INFO L480 AbstractCegarLoop]: Abstraction has 9747 states and 10990 transitions. [2021-02-21 21:43:14,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 21:43:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 9747 states and 10990 transitions. [2021-02-21 21:43:14,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-02-21 21:43:14,746 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:43:14,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:43:14,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-21 21:43:14,747 INFO L428 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:43:14,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:43:14,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1362819294, now seen corresponding path program 1 times [2021-02-21 21:43:14,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:43:14,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791731961] [2021-02-21 21:43:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:43:14,830 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-21 21:43:14,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:14,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,169 WARN L141 QuantifierPusher]: treesize reduction 12, result has 96.0 percent of original size [2021-02-21 21:43:15,204 WARN L147 QuantifierPusher]: treesize reduction 12, result has 96.0 percent of original size 289 [2021-02-21 21:43:15,395 WARN L141 QuantifierPusher]: treesize reduction 12, result has 96.1 percent of original size [2021-02-21 21:43:15,407 WARN L147 QuantifierPusher]: treesize reduction 12, result has 96.1 percent of original size 295 [2021-02-21 21:43:15,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:15,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:15,988 WARN L141 QuantifierPusher]: treesize reduction 282, result has 51.1 percent of original size [2021-02-21 21:43:15,994 WARN L147 QuantifierPusher]: treesize reduction 282, result has 51.1 percent of original size 295 [2021-02-21 21:43:16,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,181 WARN L141 QuantifierPusher]: treesize reduction 12, result has 96.2 percent of original size [2021-02-21 21:43:16,186 WARN L147 QuantifierPusher]: treesize reduction 12, result has 96.2 percent of original size 307 [2021-02-21 21:43:16,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,399 WARN L141 QuantifierPusher]: treesize reduction 294, result has 51.1 percent of original size [2021-02-21 21:43:16,412 WARN L147 QuantifierPusher]: treesize reduction 294, result has 51.1 percent of original size 307 [2021-02-21 21:43:16,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,661 WARN L141 QuantifierPusher]: treesize reduction 12, result has 96.2 percent of original size [2021-02-21 21:43:16,666 WARN L147 QuantifierPusher]: treesize reduction 12, result has 96.2 percent of original size 301 [2021-02-21 21:43:16,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:16,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:16,856 WARN L141 QuantifierPusher]: treesize reduction 282, result has 51.1 percent of original size [2021-02-21 21:43:16,860 WARN L147 QuantifierPusher]: treesize reduction 282, result has 51.1 percent of original size 295 [2021-02-21 21:43:16,988 WARN L141 QuantifierPusher]: treesize reduction 282, result has 51.1 percent of original size [2021-02-21 21:43:16,993 WARN L147 QuantifierPusher]: treesize reduction 282, result has 51.1 percent of original size 295 [2021-02-21 21:43:17,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:17,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:17,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:17,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:17,152 WARN L141 QuantifierPusher]: treesize reduction 288, result has 51.1 percent of original size [2021-02-21 21:43:17,157 WARN L147 QuantifierPusher]: treesize reduction 288, result has 51.1 percent of original size 301 [2021-02-21 21:43:17,298 WARN L141 QuantifierPusher]: treesize reduction 12, result has 96.2 percent of original size [2021-02-21 21:43:17,303 WARN L147 QuantifierPusher]: treesize reduction 12, result has 96.2 percent of original size 301 [2021-02-21 21:43:17,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:17,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:17,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:17,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:17,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:17,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:17,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:17,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:17,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:17,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:17,636 WARN L141 QuantifierPusher]: treesize reduction 12, result has 96.1 percent of original size [2021-02-21 21:43:17,642 WARN L147 QuantifierPusher]: treesize reduction 12, result has 96.1 percent of original size 295 [2021-02-21 21:43:17,770 WARN L141 QuantifierPusher]: treesize reduction 12, result has 96.2 percent of original size [2021-02-21 21:43:17,775 WARN L147 QuantifierPusher]: treesize reduction 12, result has 96.2 percent of original size 301 [2021-02-21 21:43:17,904 WARN L141 QuantifierPusher]: treesize reduction 288, result has 51.1 percent of original size [2021-02-21 21:43:17,908 WARN L147 QuantifierPusher]: treesize reduction 288, result has 51.1 percent of original size 301 [2021-02-21 21:43:17,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:17,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:17,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:17,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,070 WARN L141 QuantifierPusher]: treesize reduction 12, result has 96.0 percent of original size [2021-02-21 21:43:18,074 WARN L147 QuantifierPusher]: treesize reduction 12, result has 96.0 percent of original size 289 [2021-02-21 21:43:18,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,238 WARN L141 QuantifierPusher]: treesize reduction 12, result has 96.1 percent of original size [2021-02-21 21:43:18,242 WARN L147 QuantifierPusher]: treesize reduction 12, result has 96.1 percent of original size 295 [2021-02-21 21:43:18,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,515 WARN L141 QuantifierPusher]: treesize reduction 12, result has 96.2 percent of original size [2021-02-21 21:43:18,524 WARN L147 QuantifierPusher]: treesize reduction 12, result has 96.2 percent of original size 301 [2021-02-21 21:43:18,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:18,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:18,599 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:43:18,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-21 21:43:18,603 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_master_#t~nondet7_15| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateFactory.newSPredicate(PredicateFactory.java:60) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.generateMetaTrace(AcceleratedInterpolationCore.java:359) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:225) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-21 21:43:18,606 INFO L168 Benchmark]: Toolchain (without parser) took 241417.21 ms. Allocated memory was 158.3 MB in the beginning and 7.0 GB in the end (delta: 6.8 GB). Free memory was 134.8 MB in the beginning and 4.5 GB in the end (delta: -4.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. [2021-02-21 21:43:18,606 INFO L168 Benchmark]: CDTParser took 1.18 ms. Allocated memory is still 158.3 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:43:18,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.66 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 119.7 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:43:18,606 INFO L168 Benchmark]: Boogie Preprocessor took 74.73 ms. Allocated memory is still 158.3 MB. Free memory was 119.7 MB in the beginning and 117.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:43:18,606 INFO L168 Benchmark]: RCFGBuilder took 919.97 ms. Allocated memory is still 158.3 MB. Free memory was 117.4 MB in the beginning and 111.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. [2021-02-21 21:43:18,607 INFO L168 Benchmark]: TraceAbstraction took 239966.47 ms. Allocated memory was 158.3 MB in the beginning and 7.0 GB in the end (delta: 6.8 GB). Free memory was 111.2 MB in the beginning and 4.5 GB in the end (delta: -4.4 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. [2021-02-21 21:43:18,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18 ms. Allocated memory is still 158.3 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 427.66 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 119.7 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.73 ms. Allocated memory is still 158.3 MB. Free memory was 119.7 MB in the beginning and 117.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 919.97 ms. Allocated memory is still 158.3 MB. Free memory was 117.4 MB in the beginning and 111.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 239966.47 ms. Allocated memory was 158.3 MB in the beginning and 7.0 GB in the end (delta: 6.8 GB). Free memory was 111.2 MB in the beginning and 4.5 GB in the end (delta: -4.4 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_master_#t~nondet7_15| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_master_#t~nondet7_15|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...