/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/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:46:21,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:46:21,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:46:21,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:46:21,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:46:21,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:46:21,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:46:21,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:46:21,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:46:21,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:46:21,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:46:21,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:46:21,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:46:21,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:46:21,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:46:21,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:46:21,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:46:21,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:46:21,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:46:21,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:46:21,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:46:21,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:46:21,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:46:21,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:46:21,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:46:21,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:46:21,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:46:21,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:46:21,867 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 21:46:21,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:46:21,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:46:21,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:46:21,895 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:46:21,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:46:21,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:46:21,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:46:21,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:46:21,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:46:21,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:46:21,900 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:46:21,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:46:21,900 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:46:21,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:46:21,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:46:21,902 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:46:21,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:46:21,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:46:21,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:46:21,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:46:21,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:46:21,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:46:21,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:46:22,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:46:22,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:46:22,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:46:22,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:46:22,389 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:46:22,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-02-21 21:46:22,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cbc1bf5d/d66f5c693e554d72ae50be0dd13092c9/FLAGd740aaf68 [2021-02-21 21:46:23,292 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:46:23,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-02-21 21:46:23,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cbc1bf5d/d66f5c693e554d72ae50be0dd13092c9/FLAGd740aaf68 [2021-02-21 21:46:23,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cbc1bf5d/d66f5c693e554d72ae50be0dd13092c9 [2021-02-21 21:46:23,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:46:23,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:46:23,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:46:23,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:46:23,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:46:23,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:46:23" (1/1) ... [2021-02-21 21:46:23,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36251a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:46:23, skipping insertion in model container [2021-02-21 21:46:23,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:46:23" (1/1) ... [2021-02-21 21:46:23,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:46:23,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:46:24,035 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15294,15307] [2021-02-21 21:46:24,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:46:24,335 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:46:24,531 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15294,15307] [2021-02-21 21:46:24,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:46:24,660 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:46:24,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:46:24 WrapperNode [2021-02-21 21:46:24,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:46:24,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:46:24,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:46:24,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:46:24,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:46:24" (1/1) ... [2021-02-21 21:46:24,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:46:24" (1/1) ... [2021-02-21 21:46:24,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:46:24" (1/1) ... [2021-02-21 21:46:24,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:46:24" (1/1) ... [2021-02-21 21:46:24,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:46:24" (1/1) ... [2021-02-21 21:46:24,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:46:24" (1/1) ... [2021-02-21 21:46:24,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:46:24" (1/1) ... [2021-02-21 21:46:24,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:46:24,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:46:24,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:46:24,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:46:24,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:46:24" (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 21:46:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:46:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:46:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:46:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:46:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:46:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:46:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:46:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:46:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:46:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-21 21:46:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2021-02-21 21:46:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-21 21:46:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-21 21:46:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:46:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-21 21:46:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-21 21:46:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-21 21:46:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-21 21:46:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-21 21:46:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-21 21:46:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-21 21:46:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:46:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:46:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:46:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:46:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:46:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:46:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:46:26,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:46:26,791 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 21:46:26,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:46:26 BoogieIcfgContainer [2021-02-21 21:46:26,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:46:26,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:46:26,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:46:26,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:46:26,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:46:23" (1/3) ... [2021-02-21 21:46:26,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ac91ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:46:26, skipping insertion in model container [2021-02-21 21:46:26,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:46:24" (2/3) ... [2021-02-21 21:46:26,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ac91ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:46:26, skipping insertion in model container [2021-02-21 21:46:26,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:46:26" (3/3) ... [2021-02-21 21:46:26,803 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-02-21 21:46:26,810 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:46:26,817 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:46:26,836 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:46:26,862 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:46:26,862 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:46:26,862 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:46:26,863 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:46:26,863 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:46:26,863 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:46:26,863 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:46:26,863 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:46:26,900 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states. [2021-02-21 21:46:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-02-21 21:46:26,940 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:26,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:26,942 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:26,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:26,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1011687923, now seen corresponding path program 1 times [2021-02-21 21:46:26,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:26,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353921136] [2021-02-21 21:46:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:27,042 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:27,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:27,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:27,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:27,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:46:27,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:27,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:28,207 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 21:46:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:28,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:28,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:28,667 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 21:46:28,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353921136] [2021-02-21 21:46:28,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:28,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:46:28,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417177167] [2021-02-21 21:46:28,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:46:28,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:28,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:46:28,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:28,704 INFO L87 Difference]: Start difference. First operand 911 states. Second operand 4 states. [2021-02-21 21:46:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:32,078 INFO L93 Difference]: Finished difference Result 1665 states and 2177 transitions. [2021-02-21 21:46:32,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:46:32,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 457 [2021-02-21 21:46:32,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:32,117 INFO L225 Difference]: With dead ends: 1665 [2021-02-21 21:46:32,117 INFO L226 Difference]: Without dead ends: 1249 [2021-02-21 21:46:32,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-02-21 21:46:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1242. [2021-02-21 21:46:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1242 states. [2021-02-21 21:46:32,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1521 transitions. [2021-02-21 21:46:32,360 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1521 transitions. Word has length 457 [2021-02-21 21:46:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:32,362 INFO L480 AbstractCegarLoop]: Abstraction has 1242 states and 1521 transitions. [2021-02-21 21:46:32,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:46:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1521 transitions. [2021-02-21 21:46:32,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-02-21 21:46:32,374 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:32,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:32,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:46:32,375 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:32,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:32,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1869476077, now seen corresponding path program 1 times [2021-02-21 21:46:32,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:32,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810236558] [2021-02-21 21:46:32,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:32,382 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:32,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:32,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:32,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:32,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:46:32,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:32,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:32,880 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 21:46:32,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:32,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:32,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:33,216 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 21:46:33,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810236558] [2021-02-21 21:46:33,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:33,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:46:33,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964222408] [2021-02-21 21:46:33,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:46:33,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:33,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:46:33,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:33,223 INFO L87 Difference]: Start difference. First operand 1242 states and 1521 transitions. Second operand 4 states. [2021-02-21 21:46:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:35,730 INFO L93 Difference]: Finished difference Result 2506 states and 3160 transitions. [2021-02-21 21:46:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:46:35,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 457 [2021-02-21 21:46:35,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:35,744 INFO L225 Difference]: With dead ends: 2506 [2021-02-21 21:46:35,744 INFO L226 Difference]: Without dead ends: 2060 [2021-02-21 21:46:35,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2021-02-21 21:46:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 2048. [2021-02-21 21:46:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2021-02-21 21:46:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2551 transitions. [2021-02-21 21:46:35,858 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2551 transitions. Word has length 457 [2021-02-21 21:46:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:35,860 INFO L480 AbstractCegarLoop]: Abstraction has 2048 states and 2551 transitions. [2021-02-21 21:46:35,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:46:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2551 transitions. [2021-02-21 21:46:35,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-02-21 21:46:35,873 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:35,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:35,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:46:35,874 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:35,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:35,875 INFO L82 PathProgramCache]: Analyzing trace with hash 481760115, now seen corresponding path program 1 times [2021-02-21 21:46:35,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:35,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837063689] [2021-02-21 21:46:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:35,881 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:36,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:36,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:36,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:36,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:46:36,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:36,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:46:36,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:36,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:36,447 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 21:46:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:36,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:36,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:36,686 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 21:46:36,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837063689] [2021-02-21 21:46:36,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:36,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:46:36,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628379189] [2021-02-21 21:46:36,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:46:36,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:36,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:46:36,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:46:36,690 INFO L87 Difference]: Start difference. First operand 2048 states and 2551 transitions. Second operand 5 states. [2021-02-21 21:46:41,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:41,382 INFO L93 Difference]: Finished difference Result 5656 states and 7114 transitions. [2021-02-21 21:46:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:46:41,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 457 [2021-02-21 21:46:41,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:41,403 INFO L225 Difference]: With dead ends: 5656 [2021-02-21 21:46:41,404 INFO L226 Difference]: Without dead ends: 3796 [2021-02-21 21:46:41,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:46:41,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2021-02-21 21:46:41,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3794. [2021-02-21 21:46:41,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3794 states. [2021-02-21 21:46:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 4735 transitions. [2021-02-21 21:46:41,654 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 4735 transitions. Word has length 457 [2021-02-21 21:46:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:41,655 INFO L480 AbstractCegarLoop]: Abstraction has 3794 states and 4735 transitions. [2021-02-21 21:46:41,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:46:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 4735 transitions. [2021-02-21 21:46:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-02-21 21:46:41,670 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:41,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:41,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:46:41,671 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:41,672 INFO L82 PathProgramCache]: Analyzing trace with hash -975818080, now seen corresponding path program 1 times [2021-02-21 21:46:41,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:41,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670602377] [2021-02-21 21:46:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:41,680 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:41,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:41,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:41,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:41,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:46:41,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:41,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:42,106 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 21:46:42,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:42,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:42,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:42,300 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 21:46:42,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670602377] [2021-02-21 21:46:42,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:42,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:46:42,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810740887] [2021-02-21 21:46:42,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:46:42,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:42,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:46:42,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:42,303 INFO L87 Difference]: Start difference. First operand 3794 states and 4735 transitions. Second operand 4 states. [2021-02-21 21:46:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:45,950 INFO L93 Difference]: Finished difference Result 10969 states and 13768 transitions. [2021-02-21 21:46:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:46:45,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 458 [2021-02-21 21:46:45,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:45,990 INFO L225 Difference]: With dead ends: 10969 [2021-02-21 21:46:45,990 INFO L226 Difference]: Without dead ends: 7397 [2021-02-21 21:46:46,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7397 states. [2021-02-21 21:46:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7397 to 3796. [2021-02-21 21:46:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3796 states. [2021-02-21 21:46:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 4737 transitions. [2021-02-21 21:46:46,371 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 4737 transitions. Word has length 458 [2021-02-21 21:46:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:46,372 INFO L480 AbstractCegarLoop]: Abstraction has 3796 states and 4737 transitions. [2021-02-21 21:46:46,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:46:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 4737 transitions. [2021-02-21 21:46:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2021-02-21 21:46:46,387 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:46,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:46,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:46:46,387 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:46,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:46,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1220952713, now seen corresponding path program 1 times [2021-02-21 21:46:46,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:46,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709308805] [2021-02-21 21:46:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:46,395 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:46,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:46,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:46,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:46,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:46:46,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:46,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:46:46,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:46,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:46,898 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 21:46:46,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:46,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:46,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:47,301 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 21:46:47,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709308805] [2021-02-21 21:46:47,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:47,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:46:47,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111304575] [2021-02-21 21:46:47,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:46:47,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:47,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:46:47,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:46:47,307 INFO L87 Difference]: Start difference. First operand 3796 states and 4737 transitions. Second operand 5 states. [2021-02-21 21:46:51,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:51,755 INFO L93 Difference]: Finished difference Result 10732 states and 13445 transitions. [2021-02-21 21:46:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:46:51,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 459 [2021-02-21 21:46:51,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:51,791 INFO L225 Difference]: With dead ends: 10732 [2021-02-21 21:46:51,792 INFO L226 Difference]: Without dead ends: 7161 [2021-02-21 21:46:51,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:46:51,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7161 states. [2021-02-21 21:46:52,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7161 to 7159. [2021-02-21 21:46:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7159 states. [2021-02-21 21:46:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7159 states to 7159 states and 8911 transitions. [2021-02-21 21:46:52,515 INFO L78 Accepts]: Start accepts. Automaton has 7159 states and 8911 transitions. Word has length 459 [2021-02-21 21:46:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:52,516 INFO L480 AbstractCegarLoop]: Abstraction has 7159 states and 8911 transitions. [2021-02-21 21:46:52,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:46:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 7159 states and 8911 transitions. [2021-02-21 21:46:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-02-21 21:46:52,531 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:52,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:52,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:46:52,532 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:52,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:52,533 INFO L82 PathProgramCache]: Analyzing trace with hash -326415370, now seen corresponding path program 1 times [2021-02-21 21:46:52,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:52,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521477543] [2021-02-21 21:46:52,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:52,539 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:52,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:52,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:52,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:52,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:46:52,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:52,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:52,981 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 21:46:52,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:53,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:53,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:53,206 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 21:46:53,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521477543] [2021-02-21 21:46:53,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:53,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:46:53,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055265391] [2021-02-21 21:46:53,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:46:53,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:53,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:46:53,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:53,211 INFO L87 Difference]: Start difference. First operand 7159 states and 8911 transitions. Second operand 4 states. [2021-02-21 21:46:57,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:57,145 INFO L93 Difference]: Finished difference Result 21001 states and 26213 transitions. [2021-02-21 21:46:57,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:46:57,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 460 [2021-02-21 21:46:57,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:57,207 INFO L225 Difference]: With dead ends: 21001 [2021-02-21 21:46:57,207 INFO L226 Difference]: Without dead ends: 14087 [2021-02-21 21:46:57,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:57,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14087 states. [2021-02-21 21:46:58,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14087 to 7163. [2021-02-21 21:46:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7163 states. [2021-02-21 21:46:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7163 states to 7163 states and 8915 transitions. [2021-02-21 21:46:58,022 INFO L78 Accepts]: Start accepts. Automaton has 7163 states and 8915 transitions. Word has length 460 [2021-02-21 21:46:58,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:58,023 INFO L480 AbstractCegarLoop]: Abstraction has 7163 states and 8915 transitions. [2021-02-21 21:46:58,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:46:58,023 INFO L276 IsEmpty]: Start isEmpty. Operand 7163 states and 8915 transitions. [2021-02-21 21:46:58,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-02-21 21:46:58,036 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:58,037 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:58,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:46:58,037 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:58,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:58,038 INFO L82 PathProgramCache]: Analyzing trace with hash 639685959, now seen corresponding path program 1 times [2021-02-21 21:46:58,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:58,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791530278] [2021-02-21 21:46:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:58,042 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:58,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:58,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:58,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:58,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:46:58,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:58,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:46:58,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:58,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:58,465 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 21:46:58,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:58,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:58,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:58,786 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 21:46:58,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791530278] [2021-02-21 21:46:58,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:58,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:46:58,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584627008] [2021-02-21 21:46:58,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:46:58,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:58,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:46:58,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:46:58,790 INFO L87 Difference]: Start difference. First operand 7163 states and 8915 transitions. Second operand 5 states. [2021-02-21 21:47:03,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:47:03,861 INFO L93 Difference]: Finished difference Result 19138 states and 23832 transitions. [2021-02-21 21:47:03,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:47:03,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 461 [2021-02-21 21:47:03,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:47:03,891 INFO L225 Difference]: With dead ends: 19138 [2021-02-21 21:47:03,892 INFO L226 Difference]: Without dead ends: 12226 [2021-02-21 21:47:03,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:47:03,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12226 states. [2021-02-21 21:47:05,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12226 to 12224. [2021-02-21 21:47:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12224 states. [2021-02-21 21:47:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12224 states to 12224 states and 15110 transitions. [2021-02-21 21:47:05,255 INFO L78 Accepts]: Start accepts. Automaton has 12224 states and 15110 transitions. Word has length 461 [2021-02-21 21:47:05,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:47:05,256 INFO L480 AbstractCegarLoop]: Abstraction has 12224 states and 15110 transitions. [2021-02-21 21:47:05,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:47:05,258 INFO L276 IsEmpty]: Start isEmpty. Operand 12224 states and 15110 transitions. [2021-02-21 21:47:05,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-02-21 21:47:05,281 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:47:05,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:47:05,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 21:47:05,282 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:47:05,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:47:05,283 INFO L82 PathProgramCache]: Analyzing trace with hash 15349924, now seen corresponding path program 1 times [2021-02-21 21:47:05,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:47:05,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208368684] [2021-02-21 21:47:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:47:05,288 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:47:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:05,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:05,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:05,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:05,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:47:05,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:05,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:05,655 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 21:47:05,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:47:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:05,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:05,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:05,834 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 21:47:05,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208368684] [2021-02-21 21:47:05,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:47:05,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:47:05,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002512126] [2021-02-21 21:47:05,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:47:05,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:47:05,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:47:05,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:47:05,838 INFO L87 Difference]: Start difference. First operand 12224 states and 15110 transitions. Second operand 4 states. [2021-02-21 21:47:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:47:10,945 INFO L93 Difference]: Finished difference Result 35686 states and 44198 transitions. [2021-02-21 21:47:10,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:47:10,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 462 [2021-02-21 21:47:10,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:47:10,989 INFO L225 Difference]: With dead ends: 35686 [2021-02-21 21:47:10,989 INFO L226 Difference]: Without dead ends: 24121 [2021-02-21 21:47:11,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:47:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24121 states. [2021-02-21 21:47:12,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24121 to 12232. [2021-02-21 21:47:12,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12232 states. [2021-02-21 21:47:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12232 states to 12232 states and 15118 transitions. [2021-02-21 21:47:12,640 INFO L78 Accepts]: Start accepts. Automaton has 12232 states and 15118 transitions. Word has length 462 [2021-02-21 21:47:12,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:47:12,640 INFO L480 AbstractCegarLoop]: Abstraction has 12232 states and 15118 transitions. [2021-02-21 21:47:12,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:47:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 12232 states and 15118 transitions. [2021-02-21 21:47:12,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-02-21 21:47:12,673 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:47:12,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:47:12,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 21:47:12,674 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:47:12,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:47:12,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1193402963, now seen corresponding path program 1 times [2021-02-21 21:47:12,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:47:12,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592367700] [2021-02-21 21:47:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:47:12,679 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:47:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:47:12,747 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:47:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:47:12,819 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:47:13,364 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:47:13,365 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:47:13,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 21:47:13,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:47:13 BoogieIcfgContainer [2021-02-21 21:47:13,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:47:13,422 INFO L168 Benchmark]: Toolchain (without parser) took 49925.20 ms. Allocated memory was 151.0 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 126.1 MB in the beginning and 993.0 MB in the end (delta: -866.8 MB). Peak memory consumption was 639.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:47:13,423 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:47:13,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1142.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 126.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:47:13,424 INFO L168 Benchmark]: Boogie Preprocessor took 175.26 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 122.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:47:13,425 INFO L168 Benchmark]: RCFGBuilder took 1955.35 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 122.6 MB in the beginning and 117.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 65.3 MB. Max. memory is 8.0 GB. [2021-02-21 21:47:13,426 INFO L168 Benchmark]: TraceAbstraction took 46624.88 ms. Allocated memory was 184.5 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 117.0 MB in the beginning and 993.0 MB in the end (delta: -876.0 MB). Peak memory consumption was 595.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:47:13,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1142.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 126.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 175.26 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 122.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1955.35 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 122.6 MB in the beginning and 117.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 65.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 46624.88 ms. Allocated memory was 184.5 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 117.0 MB in the beginning and 993.0 MB in the end (delta: -876.0 MB). Peak memory consumption was 595.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 912]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] _Bool newmax1 = 0; [L50] char id2 = '\x0'; [L51] unsigned char r2 = '\x0'; [L52] char st2 = '\x0'; [L53] char nl2 = '\x0'; [L54] char m2 = '\x0'; [L55] char max2 = '\x0'; [L56] _Bool mode2 = 0; [L57] _Bool newmax2 = 0; [L58] char id3 = '\x0'; [L59] unsigned char r3 = '\x0'; [L60] char st3 = '\x0'; [L61] char nl3 = '\x0'; [L62] char m3 = '\x0'; [L63] char max3 = '\x0'; [L64] _Bool mode3 = 0; [L65] _Bool newmax3 = 0; [L69] void (*nodes[3])() = { &node1, &node2, &node3 }; [L73] int __return_1873; [L74] int __return_2019; [L75] int __return_2152; [L76] int __return_2288; [L77] int __return_2426; [L78] int __return_2551; [L81] int main__c1; [L82] int main__i2; [L83] main__c1 = 0 [L84] ep12 = __VERIFIER_nondet_bool() [L85] ep13 = __VERIFIER_nondet_bool() [L86] ep21 = __VERIFIER_nondet_bool() [L87] ep23 = __VERIFIER_nondet_bool() [L88] ep31 = __VERIFIER_nondet_bool() [L89] ep32 = __VERIFIER_nondet_bool() [L90] id1 = __VERIFIER_nondet_char() [L91] r1 = __VERIFIER_nondet_uchar() [L92] st1 = __VERIFIER_nondet_char() [L93] nl1 = __VERIFIER_nondet_char() [L94] m1 = __VERIFIER_nondet_char() [L95] max1 = __VERIFIER_nondet_char() [L96] mode1 = __VERIFIER_nondet_bool() [L97] newmax1 = __VERIFIER_nondet_bool() [L98] id2 = __VERIFIER_nondet_char() [L99] r2 = __VERIFIER_nondet_uchar() [L100] st2 = __VERIFIER_nondet_char() [L101] nl2 = __VERIFIER_nondet_char() [L102] m2 = __VERIFIER_nondet_char() [L103] max2 = __VERIFIER_nondet_char() [L104] mode2 = __VERIFIER_nondet_bool() [L105] newmax2 = __VERIFIER_nondet_bool() [L106] id3 = __VERIFIER_nondet_char() [L107] r3 = __VERIFIER_nondet_uchar() [L108] st3 = __VERIFIER_nondet_char() [L109] nl3 = __VERIFIER_nondet_char() [L110] m3 = __VERIFIER_nondet_char() [L111] max3 = __VERIFIER_nondet_char() [L112] mode3 = __VERIFIER_nondet_bool() [L113] newmax3 = __VERIFIER_nondet_bool() [L115] _Bool init__r121; [L116] _Bool init__r131; [L117] _Bool init__r211; [L118] _Bool init__r231; [L119] _Bool init__r311; [L120] _Bool init__r321; [L121] _Bool init__r122; [L122] int init__tmp; [L123] _Bool init__r132; [L124] int init__tmp___0; [L125] _Bool init__r212; [L126] int init__tmp___1; [L127] _Bool init__r232; [L128] int init__tmp___2; [L129] _Bool init__r312; [L130] int init__tmp___3; [L131] _Bool init__r322; [L132] int init__tmp___4; [L133] int init__tmp___5; [L134] init__r121 = ep12 [L135] init__r131 = ep13 [L136] init__r211 = ep21 [L137] init__r231 = ep23 [L138] init__r311 = ep31 [L139] init__r321 = ep32 [L140] COND FALSE !(!(init__r121 == 0)) [L2456] COND FALSE !(!(init__r131 == 0)) [L2472] init__tmp = 0 [L144] init__r122 = (_Bool)init__tmp [L145] COND FALSE !(!(init__r131 == 0)) [L2433] COND FALSE !(!(init__r121 == 0)) [L2449] init__tmp___0 = 0 [L149] init__r132 = (_Bool)init__tmp___0 [L150] COND FALSE !(!(init__r211 == 0)) [L2410] COND FALSE !(!(init__r231 == 0)) [L2426] init__tmp___1 = 0 [L154] init__r212 = (_Bool)init__tmp___1 [L155] COND FALSE !(!(init__r231 == 0)) [L2387] COND FALSE !(!(init__r211 == 0)) [L2403] init__tmp___2 = 0 [L159] init__r232 = (_Bool)init__tmp___2 [L160] COND FALSE !(!(init__r311 == 0)) [L2364] COND FALSE !(!(init__r321 == 0)) [L2380] init__tmp___3 = 0 [L164] init__r312 = (_Bool)init__tmp___3 [L165] COND FALSE !(!(init__r321 == 0)) [L2341] COND FALSE !(!(init__r311 == 0)) [L2357] init__tmp___4 = 0 [L169] init__r322 = (_Bool)init__tmp___4 [L170] COND TRUE ((int)id1) != ((int)id2) [L172] COND TRUE ((int)id1) != ((int)id3) [L174] COND TRUE ((int)id2) != ((int)id3) [L176] COND TRUE ((int)id1) >= 0 [L178] COND TRUE ((int)id2) >= 0 [L180] COND TRUE ((int)id3) >= 0 [L182] COND TRUE ((int)r1) == 0 [L184] COND TRUE ((int)r2) == 0 [L186] COND TRUE ((int)r3) == 0 [L188] COND TRUE ((int)max1) == ((int)id1) [L190] COND TRUE ((int)max2) == ((int)id2) [L192] COND TRUE ((int)max3) == ((int)id3) [L194] COND TRUE ((int)st1) == 0 [L196] COND TRUE ((int)st2) == 0 [L198] COND TRUE ((int)st3) == 0 [L200] COND TRUE ((int)nl1) == 0 [L202] COND TRUE ((int)nl2) == 0 [L204] COND TRUE ((int)nl3) == 0 [L206] COND TRUE ((int)mode1) == 0 [L208] COND TRUE ((int)mode2) == 0 [L210] COND TRUE ((int)mode3) == 0 [L212] COND TRUE !(newmax1 == 0) [L214] COND TRUE !(newmax2 == 0) [L216] COND TRUE !(newmax3 == 0) [L218] init__tmp___5 = 1 [L219] __return_1873 = init__tmp___5 [L220] main__i2 = __return_1873 [L221] COND TRUE main__i2 != 0 [L223] p12_old = nomsg [L224] p12_new = nomsg [L225] p13_old = nomsg [L226] p13_new = nomsg [L227] p21_old = nomsg [L228] p21_new = nomsg [L229] p23_old = nomsg [L230] p23_new = nomsg [L231] p31_old = nomsg [L232] p31_new = nomsg [L233] p32_old = nomsg [L234] p32_new = nomsg [L235] main__i2 = 0 [L237] _Bool node1__newmax; [L238] node1__newmax = 0 [L239] COND FALSE !(!(mode1 == 0)) [L245] COND TRUE ((int)r1) < 2 [L247] COND FALSE !(!(ep12 == 0)) [L260] COND FALSE !(!(ep13 == 0)) [L273] mode1 = 1 [L275] _Bool node2__newmax; [L276] node2__newmax = 0 [L277] COND FALSE !(!(mode2 == 0)) [L283] COND TRUE ((int)r2) < 2 [L285] COND FALSE !(!(ep21 == 0)) [L298] COND FALSE !(!(ep23 == 0)) [L311] mode2 = 1 [L313] _Bool node3__newmax; [L314] node3__newmax = 0 [L315] COND FALSE !(!(mode3 == 0)) [L321] COND TRUE ((int)r3) < 2 [L323] COND FALSE !(!(ep31 == 0)) [L336] COND FALSE !(!(ep32 == 0)) [L349] mode3 = 1 [L350] p12_old = p12_new [L351] p12_new = nomsg [L352] p13_old = p13_new [L353] p13_new = nomsg [L354] p21_old = p21_new [L355] p21_new = nomsg [L356] p23_old = p23_new [L357] p23_new = nomsg [L358] p31_old = p31_new [L359] p31_new = nomsg [L360] p32_old = p32_new [L361] p32_new = nomsg [L363] int check__tmp; [L364] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L366] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L368] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L370] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L372] COND FALSE !(((int)r1) >= 2) [L378] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L380] COND TRUE ((int)r1) < 2 [L382] COND FALSE !(((int)r1) >= 2) [L388] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L390] COND TRUE ((int)r1) < 2 [L392] check__tmp = 1 [L393] __return_2019 = check__tmp [L394] main__c1 = __return_2019 [L396] _Bool __tmp_1; [L397] __tmp_1 = main__c1 [L398] _Bool assert__arg; [L399] assert__arg = __tmp_1 [L400] COND FALSE !(assert__arg == 0) [L407] _Bool node1__newmax; [L408] node1__newmax = 0 [L409] COND TRUE !(mode1 == 0) [L411] COND FALSE !(r1 == 255) [L417] r1 = r1 + 1 [L418] COND FALSE !(!(ep21 == 0)) [L427] COND FALSE !(!(ep31 == 0)) [L436] newmax1 = node1__newmax [L437] COND FALSE !(((int)r1) == 2) [L443] mode1 = 0 [L445] _Bool node2__newmax; [L446] node2__newmax = 0 [L447] COND TRUE !(mode2 == 0) [L449] COND FALSE !(r2 == 255) [L455] r2 = r2 + 1 [L456] COND FALSE !(!(ep12 == 0)) [L465] COND FALSE !(!(ep32 == 0)) [L474] newmax2 = node2__newmax [L475] COND FALSE !(((int)r2) == 2) [L481] mode2 = 0 [L483] _Bool node3__newmax; [L484] node3__newmax = 0 [L485] COND TRUE !(mode3 == 0) [L487] COND FALSE !(r3 == 255) [L493] r3 = r3 + 1 [L494] COND FALSE !(!(ep13 == 0)) [L503] COND FALSE !(!(ep23 == 0)) [L512] newmax3 = node3__newmax [L513] COND FALSE !(((int)r3) == 2) [L519] mode3 = 0 [L520] p12_old = p12_new [L521] p12_new = nomsg [L522] p13_old = p13_new [L523] p13_new = nomsg [L524] p21_old = p21_new [L525] p21_new = nomsg [L526] p23_old = p23_new [L527] p23_new = nomsg [L528] p31_old = p31_new [L529] p31_new = nomsg [L530] p32_old = p32_new [L531] p32_new = nomsg [L533] int check__tmp; [L534] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L536] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L538] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L540] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L542] COND FALSE !(((int)r1) >= 2) [L548] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L550] COND TRUE ((int)r1) < 2 [L552] COND FALSE !(((int)r1) >= 2) [L558] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L560] COND TRUE ((int)r1) < 2 [L562] check__tmp = 1 [L563] __return_2152 = check__tmp [L564] main__c1 = __return_2152 [L566] _Bool __tmp_2; [L567] __tmp_2 = main__c1 [L568] _Bool assert__arg; [L569] assert__arg = __tmp_2 [L570] COND FALSE !(assert__arg == 0) [L577] _Bool node1__newmax; [L578] node1__newmax = 0 [L579] COND FALSE !(!(mode1 == 0)) [L585] COND TRUE ((int)r1) < 2 [L587] COND FALSE !(!(ep12 == 0)) [L600] COND FALSE !(!(ep13 == 0)) [L613] mode1 = 1 [L615] _Bool node2__newmax; [L616] node2__newmax = 0 [L617] COND FALSE !(!(mode2 == 0)) [L623] COND TRUE ((int)r2) < 2 [L625] COND FALSE !(!(ep21 == 0)) [L638] COND FALSE !(!(ep23 == 0)) [L651] mode2 = 1 [L653] _Bool node3__newmax; [L654] node3__newmax = 0 [L655] COND FALSE !(!(mode3 == 0)) [L661] COND TRUE ((int)r3) < 2 [L663] COND FALSE !(!(ep31 == 0)) [L676] COND FALSE !(!(ep32 == 0)) [L689] mode3 = 1 [L690] p12_old = p12_new [L691] p12_new = nomsg [L692] p13_old = p13_new [L693] p13_new = nomsg [L694] p21_old = p21_new [L695] p21_new = nomsg [L696] p23_old = p23_new [L697] p23_new = nomsg [L698] p31_old = p31_new [L699] p31_new = nomsg [L700] p32_old = p32_new [L701] p32_new = nomsg [L703] int check__tmp; [L704] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L706] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L708] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L710] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L712] COND FALSE !(((int)r1) >= 2) [L718] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L720] COND TRUE ((int)r1) < 2 [L722] COND FALSE !(((int)r1) >= 2) [L728] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L730] COND TRUE ((int)r1) < 2 [L732] check__tmp = 1 [L733] __return_2288 = check__tmp [L734] main__c1 = __return_2288 [L736] _Bool __tmp_3; [L737] __tmp_3 = main__c1 [L738] _Bool assert__arg; [L739] assert__arg = __tmp_3 [L740] COND FALSE !(assert__arg == 0) [L747] _Bool node1__newmax; [L748] node1__newmax = 0 [L749] COND TRUE !(mode1 == 0) [L751] COND FALSE !(r1 == 255) [L757] r1 = r1 + 1 [L758] COND FALSE !(!(ep21 == 0)) [L767] COND FALSE !(!(ep31 == 0)) [L776] newmax1 = node1__newmax [L777] COND TRUE ((int)r1) == 2 [L779] COND TRUE ((int)max1) == ((int)id1) [L781] st1 = 1 [L783] mode1 = 0 [L785] _Bool node2__newmax; [L786] node2__newmax = 0 [L787] COND TRUE !(mode2 == 0) [L789] COND FALSE !(r2 == 255) [L795] r2 = r2 + 1 [L796] COND FALSE !(!(ep12 == 0)) [L805] COND FALSE !(!(ep32 == 0)) [L814] newmax2 = node2__newmax [L815] COND TRUE ((int)r2) == 2 [L817] COND TRUE ((int)max2) == ((int)id2) [L819] st2 = 1 [L821] mode2 = 0 [L823] _Bool node3__newmax; [L824] node3__newmax = 0 [L825] COND TRUE !(mode3 == 0) [L827] COND FALSE !(r3 == 255) [L833] r3 = r3 + 1 [L834] COND FALSE !(!(ep13 == 0)) [L843] COND FALSE !(!(ep23 == 0)) [L852] newmax3 = node3__newmax [L853] COND TRUE ((int)r3) == 2 [L855] COND TRUE ((int)max3) == ((int)id3) [L857] st3 = 1 [L859] mode3 = 0 [L860] p12_old = p12_new [L861] p12_new = nomsg [L862] p13_old = p13_new [L863] p13_new = nomsg [L864] p21_old = p21_new [L865] p21_new = nomsg [L866] p23_old = p23_new [L867] p23_new = nomsg [L868] p31_old = p31_new [L869] p31_new = nomsg [L870] p32_old = p32_new [L871] p32_new = nomsg [L873] int check__tmp; [L874] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1570] check__tmp = 0 [L902] __return_2426 = check__tmp [L903] main__c1 = __return_2426 [L906] _Bool __tmp_4; [L907] __tmp_4 = main__c1 [L908] _Bool assert__arg; [L909] assert__arg = __tmp_4 [L910] COND TRUE assert__arg == 0 [L912] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 919 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 33.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10088 SDtfs, 8472 SDslu, 7709 SDs, 0 SdLazy, 10468 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12232occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 22439 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...