/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.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 19:16:26,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 19:16:26,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 19:16:26,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 19:16:26,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 19:16:26,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 19:16:26,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 19:16:26,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 19:16:26,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 19:16:26,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 19:16:26,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 19:16:26,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 19:16:26,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 19:16:26,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 19:16:26,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 19:16:26,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 19:16:26,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 19:16:26,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 19:16:26,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 19:16:26,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 19:16:26,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 19:16:26,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 19:16:26,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 19:16:26,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 19:16:26,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 19:16:26,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 19:16:26,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 19:16:26,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 19:16:26,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 19:16:26,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 19:16:26,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 19:16:26,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 19:16:26,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 19:16:26,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 19:16:26,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 19:16:26,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 19:16:26,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 19:16:26,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 19:16:26,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 19:16:26,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 19:16:26,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 19:16:26,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 19:16:26,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 19:16:26,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 19:16:26,627 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 19:16:26,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 19:16:26,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 19:16:26,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:16:26,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 19:16:26,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 19:16:26,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 19:16:26,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 19:16:27,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 19:16:27,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 19:16:27,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 19:16:27,063 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 19:16:27,064 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 19:16:27,065 INFO L432 ainManager$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.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-23 19:16:27,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55893f29d/497e119625884e38b00739693256041e/FLAG5fcaa3b0e [2021-02-23 19:16:27,915 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 19:16:27,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-23 19:16:27,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55893f29d/497e119625884e38b00739693256041e/FLAG5fcaa3b0e [2021-02-23 19:16:27,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55893f29d/497e119625884e38b00739693256041e [2021-02-23 19:16:27,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 19:16:27,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 19:16:27,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 19:16:27,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 19:16:27,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 19:16:27,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:16:27" (1/1) ... [2021-02-23 19:16:27,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593fdf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:16:27, skipping insertion in model container [2021-02-23 19:16:27,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:16:27" (1/1) ... [2021-02-23 19:16:27,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 19:16:28,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 19:16:28,598 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.BOUNDED-6.pals.c.v+nlh-reducer.c[15396,15409] [2021-02-23 19:16:28,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:16:28,728 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 19:16:28,918 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.BOUNDED-6.pals.c.v+nlh-reducer.c[15396,15409] [2021-02-23 19:16:28,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:16:29,012 INFO L208 MainTranslator]: Completed translation [2021-02-23 19:16:29,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:16:29 WrapperNode [2021-02-23 19:16:29,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 19:16:29,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 19:16:29,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 19:16:29,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 19:16:29,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:16:29" (1/1) ... [2021-02-23 19:16:29,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:16:29" (1/1) ... [2021-02-23 19:16:29,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:16:29" (1/1) ... [2021-02-23 19:16:29,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:16:29" (1/1) ... [2021-02-23 19:16:29,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:16:29" (1/1) ... [2021-02-23 19:16:29,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:16:29" (1/1) ... [2021-02-23 19:16:29,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:16:29" (1/1) ... [2021-02-23 19:16:29,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 19:16:29,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 19:16:29,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 19:16:29,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 19:16:29,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:16:29" (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 [2021-02-23 19:16:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 19:16:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 19:16:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 19:16:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 19:16:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 19:16:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 19:16:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 19:16:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 19:16:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 19:16:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-23 19:16:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 19:16:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-23 19:16:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 19:16:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-23 19:16:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-23 19:16:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-23 19:16:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-23 19:16:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-23 19:16:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-23 19:16:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-23 19:16:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 19:16:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 19:16:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 19:16:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 19:16:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 19:16:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 19:16:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 19:16:30,928 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 19:16:30,928 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 19:16:30,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:16:30 BoogieIcfgContainer [2021-02-23 19:16:30,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 19:16:30,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 19:16:30,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 19:16:30,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 19:16:30,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:16:27" (1/3) ... [2021-02-23 19:16:30,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30259908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:16:30, skipping insertion in model container [2021-02-23 19:16:30,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:16:29" (2/3) ... [2021-02-23 19:16:30,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30259908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:16:30, skipping insertion in model container [2021-02-23 19:16:30,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:16:30" (3/3) ... [2021-02-23 19:16:30,945 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-23 19:16:30,953 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 19:16:30,959 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 19:16:30,977 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 19:16:31,001 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 19:16:31,001 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 19:16:31,001 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 19:16:31,001 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 19:16:31,001 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 19:16:31,002 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 19:16:31,002 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 19:16:31,002 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 19:16:31,037 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states. [2021-02-23 19:16:31,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-02-23 19:16:31,079 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:31,081 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, 1, 1, 1, 1, 1] [2021-02-23 19:16:31,081 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:31,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:31,089 INFO L82 PathProgramCache]: Analyzing trace with hash 203862110, now seen corresponding path program 1 times [2021-02-23 19:16:31,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:31,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653621614] [2021-02-23 19:16:31,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:31,191 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:31,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:31,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:31,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:31,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:16:31,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:31,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:32,249 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:16:32,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:32,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:32,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:32,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653621614] [2021-02-23 19:16:32,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:32,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:16:32,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236583730] [2021-02-23 19:16:32,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:16:32,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:32,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:16:32,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:16:32,649 INFO L87 Difference]: Start difference. First operand 920 states. Second operand 4 states. [2021-02-23 19:16:36,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:36,102 INFO L93 Difference]: Finished difference Result 1627 states and 2113 transitions. [2021-02-23 19:16:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:16:36,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2021-02-23 19:16:36,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:36,132 INFO L225 Difference]: With dead ends: 1627 [2021-02-23 19:16:36,132 INFO L226 Difference]: Without dead ends: 1240 [2021-02-23 19:16:36,140 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 [2021-02-23 19:16:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2021-02-23 19:16:36,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1233. [2021-02-23 19:16:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1233 states. [2021-02-23 19:16:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1502 transitions. [2021-02-23 19:16:36,297 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1502 transitions. Word has length 468 [2021-02-23 19:16:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:36,299 INFO L480 AbstractCegarLoop]: Abstraction has 1233 states and 1502 transitions. [2021-02-23 19:16:36,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:16:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1502 transitions. [2021-02-23 19:16:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-02-23 19:16:36,310 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:36,311 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, 1, 1, 1, 1, 1] [2021-02-23 19:16:36,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 19:16:36,311 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:36,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:36,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2139611678, now seen corresponding path program 1 times [2021-02-23 19:16:36,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:36,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916878048] [2021-02-23 19:16:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:36,318 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:36,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:36,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:36,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:36,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:16:36,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:36,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:36,904 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:16:36,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:36,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:36,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:37,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916878048] [2021-02-23 19:16:37,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:37,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:16:37,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715694351] [2021-02-23 19:16:37,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:16:37,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:37,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:16:37,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:16:37,229 INFO L87 Difference]: Start difference. First operand 1233 states and 1502 transitions. Second operand 4 states. [2021-02-23 19:16:39,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:39,981 INFO L93 Difference]: Finished difference Result 2417 states and 3031 transitions. [2021-02-23 19:16:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:16:39,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2021-02-23 19:16:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:39,994 INFO L225 Difference]: With dead ends: 2417 [2021-02-23 19:16:39,994 INFO L226 Difference]: Without dead ends: 2017 [2021-02-23 19:16:39,999 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 [2021-02-23 19:16:40,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2021-02-23 19:16:40,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2005. [2021-02-23 19:16:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2005 states. [2021-02-23 19:16:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 2484 transitions. [2021-02-23 19:16:40,104 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 2484 transitions. Word has length 468 [2021-02-23 19:16:40,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:40,105 INFO L480 AbstractCegarLoop]: Abstraction has 2005 states and 2484 transitions. [2021-02-23 19:16:40,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:16:40,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 2484 transitions. [2021-02-23 19:16:40,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-02-23 19:16:40,118 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:40,119 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, 1, 1, 1, 1, 1] [2021-02-23 19:16:40,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 19:16:40,119 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:40,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:40,120 INFO L82 PathProgramCache]: Analyzing trace with hash 503531262, now seen corresponding path program 1 times [2021-02-23 19:16:40,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:40,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130580305] [2021-02-23 19:16:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:40,124 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:40,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:40,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:40,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:40,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:16:40,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:40,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:16:40,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:40,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:40,781 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:16:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:40,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:40,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:41,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130580305] [2021-02-23 19:16:41,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:41,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:16:41,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10298412] [2021-02-23 19:16:41,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:16:41,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:41,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:16:41,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:16:41,061 INFO L87 Difference]: Start difference. First operand 2005 states and 2484 transitions. Second operand 5 states. [2021-02-23 19:16:45,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:45,627 INFO L93 Difference]: Finished difference Result 5526 states and 6915 transitions. [2021-02-23 19:16:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:16:45,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 468 [2021-02-23 19:16:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:45,648 INFO L225 Difference]: With dead ends: 5526 [2021-02-23 19:16:45,649 INFO L226 Difference]: Without dead ends: 3714 [2021-02-23 19:16:45,653 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 [2021-02-23 19:16:45,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2021-02-23 19:16:45,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3712. [2021-02-23 19:16:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3712 states. [2021-02-23 19:16:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 4609 transitions. [2021-02-23 19:16:45,902 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 4609 transitions. Word has length 468 [2021-02-23 19:16:45,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:45,903 INFO L480 AbstractCegarLoop]: Abstraction has 3712 states and 4609 transitions. [2021-02-23 19:16:45,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:16:45,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 4609 transitions. [2021-02-23 19:16:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-02-23 19:16:45,915 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:45,916 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, 1, 1, 1, 1, 1, 1] [2021-02-23 19:16:45,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 19:16:45,917 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:45,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:45,918 INFO L82 PathProgramCache]: Analyzing trace with hash 2073566048, now seen corresponding path program 1 times [2021-02-23 19:16:45,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:45,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651323355] [2021-02-23 19:16:45,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:45,924 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:46,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:46,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:46,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:46,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:16:46,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:46,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:46,382 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:16:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:46,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:46,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:46,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651323355] [2021-02-23 19:16:46,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:46,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:16:46,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272088061] [2021-02-23 19:16:46,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:16:46,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:46,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:16:46,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:16:46,591 INFO L87 Difference]: Start difference. First operand 3712 states and 4609 transitions. Second operand 4 states. [2021-02-23 19:16:51,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:51,493 INFO L93 Difference]: Finished difference Result 10713 states and 13380 transitions. [2021-02-23 19:16:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:16:51,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 469 [2021-02-23 19:16:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:51,530 INFO L225 Difference]: With dead ends: 10713 [2021-02-23 19:16:51,530 INFO L226 Difference]: Without dead ends: 7228 [2021-02-23 19:16:51,539 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 [2021-02-23 19:16:51,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7228 states. [2021-02-23 19:16:51,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7228 to 3714. [2021-02-23 19:16:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3714 states. [2021-02-23 19:16:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4611 transitions. [2021-02-23 19:16:51,880 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4611 transitions. Word has length 469 [2021-02-23 19:16:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:51,880 INFO L480 AbstractCegarLoop]: Abstraction has 3714 states and 4611 transitions. [2021-02-23 19:16:51,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:16:51,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4611 transitions. [2021-02-23 19:16:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-02-23 19:16:51,895 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:51,895 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, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:16:51,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 19:16:51,896 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:51,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:51,896 INFO L82 PathProgramCache]: Analyzing trace with hash 855425531, now seen corresponding path program 1 times [2021-02-23 19:16:51,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:51,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608578742] [2021-02-23 19:16:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:51,903 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:52,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:52,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:52,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:52,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 19:16:52,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:52,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:52,446 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:16:52,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:52,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:52,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:52,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608578742] [2021-02-23 19:16:52,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:52,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:16:52,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035155652] [2021-02-23 19:16:52,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:16:52,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:52,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:16:52,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:16:52,736 INFO L87 Difference]: Start difference. First operand 3714 states and 4611 transitions. Second operand 4 states. [2021-02-23 19:16:57,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:57,817 INFO L93 Difference]: Finished difference Result 9571 states and 11927 transitions. [2021-02-23 19:16:57,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:16:57,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 470 [2021-02-23 19:16:57,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:57,846 INFO L225 Difference]: With dead ends: 9571 [2021-02-23 19:16:57,847 INFO L226 Difference]: Without dead ends: 6322 [2021-02-23 19:16:57,854 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 [2021-02-23 19:16:57,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2021-02-23 19:16:58,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 6320. [2021-02-23 19:16:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6320 states. [2021-02-23 19:16:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6320 states to 6320 states and 7817 transitions. [2021-02-23 19:16:58,403 INFO L78 Accepts]: Start accepts. Automaton has 6320 states and 7817 transitions. Word has length 470 [2021-02-23 19:16:58,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:58,404 INFO L480 AbstractCegarLoop]: Abstraction has 6320 states and 7817 transitions. [2021-02-23 19:16:58,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:16:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 6320 states and 7817 transitions. [2021-02-23 19:16:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-02-23 19:16:58,416 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:58,417 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, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:16:58,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 19:16:58,417 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:58,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:58,418 INFO L82 PathProgramCache]: Analyzing trace with hash 774680955, now seen corresponding path program 1 times [2021-02-23 19:16:58,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:58,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293416669] [2021-02-23 19:16:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:58,422 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:58,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:58,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:58,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:58,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:16:58,689 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-23 19:16:58,691 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-23 19:16:58,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:58,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:16:58,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:58,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:59,134 WARN L202 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:16:59,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:59,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:59,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:59,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293416669] [2021-02-23 19:16:59,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:59,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:16:59,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189109133] [2021-02-23 19:16:59,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:16:59,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:59,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:16:59,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:16:59,357 INFO L87 Difference]: Start difference. First operand 6320 states and 7817 transitions. Second operand 6 states. [2021-02-23 19:17:04,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:17:04,127 INFO L93 Difference]: Finished difference Result 17878 states and 22142 transitions. [2021-02-23 19:17:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:17:04,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 470 [2021-02-23 19:17:04,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:17:04,173 INFO L225 Difference]: With dead ends: 17878 [2021-02-23 19:17:04,174 INFO L226 Difference]: Without dead ends: 11756 [2021-02-23 19:17:04,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:17:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11756 states. [2021-02-23 19:17:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11756 to 11754. [2021-02-23 19:17:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11754 states. [2021-02-23 19:17:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11754 states to 11754 states and 14456 transitions. [2021-02-23 19:17:05,196 INFO L78 Accepts]: Start accepts. Automaton has 11754 states and 14456 transitions. Word has length 470 [2021-02-23 19:17:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:17:05,196 INFO L480 AbstractCegarLoop]: Abstraction has 11754 states and 14456 transitions. [2021-02-23 19:17:05,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:17:05,197 INFO L276 IsEmpty]: Start isEmpty. Operand 11754 states and 14456 transitions. [2021-02-23 19:17:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-02-23 19:17:05,220 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:17:05,221 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, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:17:05,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 19:17:05,221 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:17:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:17:05,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2022889176, now seen corresponding path program 1 times [2021-02-23 19:17:05,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:17:05,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470759332] [2021-02-23 19:17:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:17:05,226 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:17:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:05,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:05,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:05,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:05,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:17:05,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:05,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:17:05,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:05,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:05,834 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:17:05,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:17:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:05,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:05,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:17:06,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470759332] [2021-02-23 19:17:06,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:17:06,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:17:06,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766630075] [2021-02-23 19:17:06,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:17:06,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:17:06,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:17:06,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:17:06,117 INFO L87 Difference]: Start difference. First operand 11754 states and 14456 transitions. Second operand 5 states. [2021-02-23 19:17:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:17:11,871 INFO L93 Difference]: Finished difference Result 33967 states and 41767 transitions. [2021-02-23 19:17:11,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:17:11,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 470 [2021-02-23 19:17:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:17:11,918 INFO L225 Difference]: With dead ends: 33967 [2021-02-23 19:17:11,919 INFO L226 Difference]: Without dead ends: 22486 [2021-02-23 19:17:11,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:17:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22486 states. [2021-02-23 19:17:13,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22486 to 22484. [2021-02-23 19:17:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22484 states. [2021-02-23 19:17:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22484 states to 22484 states and 27480 transitions. [2021-02-23 19:17:13,657 INFO L78 Accepts]: Start accepts. Automaton has 22484 states and 27480 transitions. Word has length 470 [2021-02-23 19:17:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:17:13,658 INFO L480 AbstractCegarLoop]: Abstraction has 22484 states and 27480 transitions. [2021-02-23 19:17:13,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:17:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 22484 states and 27480 transitions. [2021-02-23 19:17:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2021-02-23 19:17:13,772 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:17:13,773 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:17:13,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 19:17:13,773 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:17:13,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:17:13,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1333420558, now seen corresponding path program 1 times [2021-02-23 19:17:13,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:17:13,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102780074] [2021-02-23 19:17:13,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:17:13,778 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:17:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:13,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:13,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:13,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:13,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:17:13,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:13,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:14,195 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:17:14,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:17:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:14,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:14,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:17:14,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102780074] [2021-02-23 19:17:14,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:17:14,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:17:14,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083490785] [2021-02-23 19:17:14,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:17:14,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:17:14,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:17:14,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:17:14,388 INFO L87 Difference]: Start difference. First operand 22484 states and 27480 transitions. Second operand 4 states. [2021-02-23 19:17:22,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:17:22,256 INFO L93 Difference]: Finished difference Result 66841 states and 81748 transitions. [2021-02-23 19:17:22,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:17:22,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 471 [2021-02-23 19:17:22,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:17:22,342 INFO L225 Difference]: With dead ends: 66841 [2021-02-23 19:17:22,342 INFO L226 Difference]: Without dead ends: 44680 [2021-02-23 19:17:22,394 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 [2021-02-23 19:17:22,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44680 states. [2021-02-23 19:17:24,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44680 to 22494. [2021-02-23 19:17:24,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22494 states. [2021-02-23 19:17:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22494 states to 22494 states and 27490 transitions. [2021-02-23 19:17:24,761 INFO L78 Accepts]: Start accepts. Automaton has 22494 states and 27490 transitions. Word has length 471 [2021-02-23 19:17:24,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:17:24,761 INFO L480 AbstractCegarLoop]: Abstraction has 22494 states and 27490 transitions. [2021-02-23 19:17:24,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:17:24,762 INFO L276 IsEmpty]: Start isEmpty. Operand 22494 states and 27490 transitions. [2021-02-23 19:17:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2021-02-23 19:17:24,795 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:17:24,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:17:24,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 19:17:24,795 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:17:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:17:24,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1173626859, now seen corresponding path program 1 times [2021-02-23 19:17:24,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:17:24,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076757142] [2021-02-23 19:17:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:17:24,800 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:17:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:24,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:24,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:24,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:24,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 19:17:24,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:24,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:25,430 WARN L202 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:17:25,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:17:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:25,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:25,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:17:25,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076757142] [2021-02-23 19:17:25,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:17:25,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:17:25,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137287780] [2021-02-23 19:17:25,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:17:25,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:17:25,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:17:25,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:17:25,632 INFO L87 Difference]: Start difference. First operand 22494 states and 27490 transitions. Second operand 4 states. [2021-02-23 19:17:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:17:34,231 INFO L93 Difference]: Finished difference Result 64199 states and 78400 transitions. [2021-02-23 19:17:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:17:34,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 472 [2021-02-23 19:17:34,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:17:34,308 INFO L225 Difference]: With dead ends: 64199 [2021-02-23 19:17:34,309 INFO L226 Difference]: Without dead ends: 43207 [2021-02-23 19:17:34,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:17:34,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43207 states. [2021-02-23 19:17:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43207 to 43205. [2021-02-23 19:17:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43205 states. [2021-02-23 19:17:38,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43205 states to 43205 states and 52420 transitions. [2021-02-23 19:17:38,294 INFO L78 Accepts]: Start accepts. Automaton has 43205 states and 52420 transitions. Word has length 472 [2021-02-23 19:17:38,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:17:38,295 INFO L480 AbstractCegarLoop]: Abstraction has 43205 states and 52420 transitions. [2021-02-23 19:17:38,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:17:38,295 INFO L276 IsEmpty]: Start isEmpty. Operand 43205 states and 52420 transitions. [2021-02-23 19:17:38,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2021-02-23 19:17:38,345 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:17:38,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:17:38,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 19:17:38,345 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:17:38,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:17:38,346 INFO L82 PathProgramCache]: Analyzing trace with hash 365260693, now seen corresponding path program 1 times [2021-02-23 19:17:38,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:17:38,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761192763] [2021-02-23 19:17:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:17:38,350 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:17:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:38,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:38,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:38,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:38,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:17:38,527 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-23 19:17:38,529 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-23 19:17:38,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:38,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:17:38,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:38,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:38,869 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:17:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:17:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:38,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:38,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:17:39,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761192763] [2021-02-23 19:17:39,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:17:39,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:17:39,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277830159] [2021-02-23 19:17:39,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:17:39,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:17:39,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:17:39,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:17:39,332 INFO L87 Difference]: Start difference. First operand 43205 states and 52420 transitions. Second operand 6 states. [2021-02-23 19:17:50,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:17:50,782 INFO L93 Difference]: Finished difference Result 116475 states and 140997 transitions. [2021-02-23 19:17:50,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:17:50,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 472 [2021-02-23 19:17:50,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:17:50,874 INFO L225 Difference]: With dead ends: 116475 [2021-02-23 19:17:50,875 INFO L226 Difference]: Without dead ends: 73569 [2021-02-23 19:17:50,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:17:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73569 states. [2021-02-23 19:17:58,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73569 to 73567. [2021-02-23 19:17:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73567 states. [2021-02-23 19:17:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73567 states to 73567 states and 88343 transitions. [2021-02-23 19:17:58,228 INFO L78 Accepts]: Start accepts. Automaton has 73567 states and 88343 transitions. Word has length 472 [2021-02-23 19:17:58,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:17:58,229 INFO L480 AbstractCegarLoop]: Abstraction has 73567 states and 88343 transitions. [2021-02-23 19:17:58,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:17:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 73567 states and 88343 transitions. [2021-02-23 19:17:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2021-02-23 19:17:58,281 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:17:58,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:17:58,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 19:17:58,282 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:17:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:17:58,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1550629286, now seen corresponding path program 1 times [2021-02-23 19:17:58,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:17:58,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459246032] [2021-02-23 19:17:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:17:58,287 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:17:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:58,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:58,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:58,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:58,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:17:58,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:58,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:17:58,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:58,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:58,799 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:17:58,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:17:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:58,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:58,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:17:58,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459246032] [2021-02-23 19:17:58,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:17:58,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:17:58,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869817480] [2021-02-23 19:17:58,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:17:58,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:17:58,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:17:58,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:17:58,985 INFO L87 Difference]: Start difference. First operand 73567 states and 88343 transitions. Second operand 5 states. [2021-02-23 19:18:11,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:18:11,810 INFO L93 Difference]: Finished difference Result 147631 states and 177256 transitions. [2021-02-23 19:18:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:18:11,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 472 [2021-02-23 19:18:11,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:18:11,903 INFO L225 Difference]: With dead ends: 147631 [2021-02-23 19:18:11,904 INFO L226 Difference]: Without dead ends: 74864 [2021-02-23 19:18:11,979 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 [2021-02-23 19:18:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74864 states. [2021-02-23 19:18:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74864 to 74237. [2021-02-23 19:18:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74237 states. [2021-02-23 19:18:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74237 states to 74237 states and 89080 transitions. [2021-02-23 19:18:20,082 INFO L78 Accepts]: Start accepts. Automaton has 74237 states and 89080 transitions. Word has length 472 [2021-02-23 19:18:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:18:20,083 INFO L480 AbstractCegarLoop]: Abstraction has 74237 states and 89080 transitions. [2021-02-23 19:18:20,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:18:20,083 INFO L276 IsEmpty]: Start isEmpty. Operand 74237 states and 89080 transitions. [2021-02-23 19:18:20,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-02-23 19:18:20,139 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:18:20,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:18:20,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 19:18:20,140 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:18:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:18:20,141 INFO L82 PathProgramCache]: Analyzing trace with hash -61253668, now seen corresponding path program 1 times [2021-02-23 19:18:20,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:18:20,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879167362] [2021-02-23 19:18:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:18:20,144 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:18:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:18:20,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:20,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:18:20,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:20,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:18:20,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:20,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:18:20,731 WARN L202 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:18:20,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:18:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:18:20,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:20,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:18:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:18:20,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879167362] [2021-02-23 19:18:20,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:18:20,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:18:20,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840652876] [2021-02-23 19:18:20,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:18:20,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:18:20,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:18:20,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:18:20,938 INFO L87 Difference]: Start difference. First operand 74237 states and 89080 transitions. Second operand 4 states. [2021-02-23 19:18:42,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:18:42,076 INFO L93 Difference]: Finished difference Result 219321 states and 263358 transitions. [2021-02-23 19:18:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:18:42,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 473 [2021-02-23 19:18:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:18:42,282 INFO L225 Difference]: With dead ends: 219321 [2021-02-23 19:18:42,282 INFO L226 Difference]: Without dead ends: 147619 [2021-02-23 19:18:42,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:18:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147619 states. [2021-02-23 19:18:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147619 to 74277. [2021-02-23 19:18:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74277 states. [2021-02-23 19:18:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74277 states to 74277 states and 89120 transitions. [2021-02-23 19:18:51,848 INFO L78 Accepts]: Start accepts. Automaton has 74277 states and 89120 transitions. Word has length 473 [2021-02-23 19:18:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:18:51,848 INFO L480 AbstractCegarLoop]: Abstraction has 74277 states and 89120 transitions. [2021-02-23 19:18:51,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:18:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 74277 states and 89120 transitions. [2021-02-23 19:18:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-02-23 19:18:51,887 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:18:51,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:18:51,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 19:18:51,888 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:18:51,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:18:51,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1302762327, now seen corresponding path program 1 times [2021-02-23 19:18:51,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:18:51,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527199112] [2021-02-23 19:18:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:18:51,892 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:18:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:18:52,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:52,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:18:52,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:52,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:18:52,074 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-23 19:18:52,075 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-23 19:18:52,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:52,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:18:52,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:52,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:18:52,454 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 19:18:52,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:18:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:18:52,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:52,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:18:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:18:52,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527199112] [2021-02-23 19:18:52,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:18:52,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:18:52,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135659315] [2021-02-23 19:18:52,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:18:52,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:18:52,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:18:52,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:18:52,893 INFO L87 Difference]: Start difference. First operand 74277 states and 89120 transitions. Second operand 6 states. [2021-02-23 19:19:07,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:19:07,656 INFO L93 Difference]: Finished difference Result 150261 states and 180166 transitions. [2021-02-23 19:19:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:19:07,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 474 [2021-02-23 19:19:07,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:19:07,745 INFO L225 Difference]: With dead ends: 150261 [2021-02-23 19:19:07,746 INFO L226 Difference]: Without dead ends: 76627 [2021-02-23 19:19:07,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:19:08,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76627 states. [2021-02-23 19:19:17,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76627 to 75641. [2021-02-23 19:19:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75641 states. [2021-02-23 19:19:17,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75641 states to 75641 states and 90590 transitions. [2021-02-23 19:19:17,588 INFO L78 Accepts]: Start accepts. Automaton has 75641 states and 90590 transitions. Word has length 474 [2021-02-23 19:19:17,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:19:17,588 INFO L480 AbstractCegarLoop]: Abstraction has 75641 states and 90590 transitions. [2021-02-23 19:19:17,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:19:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 75641 states and 90590 transitions. [2021-02-23 19:19:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-02-23 19:19:17,632 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:19:17,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:19:17,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 19:19:17,633 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:19:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:19:17,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1568155524, now seen corresponding path program 1 times [2021-02-23 19:19:17,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:19:17,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647768628] [2021-02-23 19:19:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:19:17,637 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:19:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:19:17,706 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:19:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:19:17,778 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:19:18,564 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 19:19:18,565 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 19:19:18,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 19:19:18,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:19:18 BoogieIcfgContainer [2021-02-23 19:19:18,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 19:19:18,625 INFO L168 Benchmark]: Toolchain (without parser) took 170668.82 ms. Allocated memory was 151.0 MB in the beginning and 6.6 GB in the end (delta: 6.4 GB). Free memory was 125.9 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 8.0 GB. [2021-02-23 19:19:18,625 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 19:19:18,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1042.77 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 126.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2021-02-23 19:19:18,626 INFO L168 Benchmark]: Boogie Preprocessor took 172.62 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 122.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 19:19:18,627 INFO L168 Benchmark]: RCFGBuilder took 1744.14 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 121.9 MB in the beginning and 112.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 8.0 GB. [2021-02-23 19:19:18,627 INFO L168 Benchmark]: TraceAbstraction took 167686.41 ms. Allocated memory was 181.4 MB in the beginning and 6.6 GB in the end (delta: 6.4 GB). Free memory was 112.2 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 8.0 GB. [2021-02-23 19:19:18,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1042.77 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 126.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 172.62 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 122.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1744.14 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 121.9 MB in the beginning and 112.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 167686.41 ms. Allocated memory was 181.4 MB in the beginning and 6.6 GB in the end (delta: 6.4 GB). Free memory was 112.2 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 893]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] _Bool newmax1 = 0; [L49] char id2 = '\x0'; [L50] char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] _Bool newmax2 = 0; [L57] char id3 = '\x0'; [L58] char r3 = '\x0'; [L59] char st3 = '\x0'; [L60] char nl3 = '\x0'; [L61] char m3 = '\x0'; [L62] char max3 = '\x0'; [L63] _Bool mode3 = 0; [L64] _Bool newmax3 = 0; [L68] void (*nodes[3])() = { &node1, &node2, &node3 }; [L72] int __return_1863; [L73] int __return_2009; [L74] int __return_2142; [L75] int __return_2281; [L76] int __return_2419; [L77] int __tmp_2420_0; [L78] int __return_2543; [L79] int __return_2433; [L82] int main__c1; [L83] int main__i2; [L84] main__c1 = 0 [L85] ep12 = __VERIFIER_nondet_bool() [L86] ep13 = __VERIFIER_nondet_bool() [L87] ep21 = __VERIFIER_nondet_bool() [L88] ep23 = __VERIFIER_nondet_bool() [L89] ep31 = __VERIFIER_nondet_bool() [L90] ep32 = __VERIFIER_nondet_bool() [L91] id1 = __VERIFIER_nondet_char() [L92] r1 = __VERIFIER_nondet_char() [L93] st1 = __VERIFIER_nondet_char() [L94] nl1 = __VERIFIER_nondet_char() [L95] m1 = __VERIFIER_nondet_char() [L96] max1 = __VERIFIER_nondet_char() [L97] mode1 = __VERIFIER_nondet_bool() [L98] newmax1 = __VERIFIER_nondet_bool() [L99] id2 = __VERIFIER_nondet_char() [L100] r2 = __VERIFIER_nondet_char() [L101] st2 = __VERIFIER_nondet_char() [L102] nl2 = __VERIFIER_nondet_char() [L103] m2 = __VERIFIER_nondet_char() [L104] max2 = __VERIFIER_nondet_char() [L105] mode2 = __VERIFIER_nondet_bool() [L106] newmax2 = __VERIFIER_nondet_bool() [L107] id3 = __VERIFIER_nondet_char() [L108] r3 = __VERIFIER_nondet_char() [L109] st3 = __VERIFIER_nondet_char() [L110] nl3 = __VERIFIER_nondet_char() [L111] m3 = __VERIFIER_nondet_char() [L112] max3 = __VERIFIER_nondet_char() [L113] mode3 = __VERIFIER_nondet_bool() [L114] newmax3 = __VERIFIER_nondet_bool() [L116] _Bool init__r121; [L117] _Bool init__r131; [L118] _Bool init__r211; [L119] _Bool init__r231; [L120] _Bool init__r311; [L121] _Bool init__r321; [L122] _Bool init__r122; [L123] int init__tmp; [L124] _Bool init__r132; [L125] int init__tmp___0; [L126] _Bool init__r212; [L127] int init__tmp___1; [L128] _Bool init__r232; [L129] int init__tmp___2; [L130] _Bool init__r312; [L131] int init__tmp___3; [L132] _Bool init__r322; [L133] int init__tmp___4; [L134] int init__tmp___5; [L135] init__r121 = ep12 [L136] init__r131 = ep13 [L137] init__r211 = ep21 [L138] init__r231 = ep23 [L139] init__r311 = ep31 [L140] init__r321 = ep32 [L141] COND FALSE !(!(init__r121 == 0)) [L2435] COND FALSE !(!(init__r131 == 0)) [L2451] init__tmp = 0 [L145] init__r122 = (_Bool)init__tmp [L146] COND FALSE !(!(init__r131 == 0)) [L2412] COND FALSE !(!(init__r121 == 0)) [L2428] init__tmp___0 = 0 [L150] init__r132 = (_Bool)init__tmp___0 [L151] COND FALSE !(!(init__r211 == 0)) [L2389] COND FALSE !(!(init__r231 == 0)) [L2405] init__tmp___1 = 0 [L155] init__r212 = (_Bool)init__tmp___1 [L156] COND FALSE !(!(init__r231 == 0)) [L2366] COND FALSE !(!(init__r211 == 0)) [L2382] init__tmp___2 = 0 [L160] init__r232 = (_Bool)init__tmp___2 [L161] COND FALSE !(!(init__r311 == 0)) [L2343] COND FALSE !(!(init__r321 == 0)) [L2359] init__tmp___3 = 0 [L165] init__r312 = (_Bool)init__tmp___3 [L166] COND FALSE !(!(init__r321 == 0)) [L2320] COND FALSE !(!(init__r311 == 0)) [L2336] init__tmp___4 = 0 [L170] init__r322 = (_Bool)init__tmp___4 [L171] COND TRUE ((int)id1) != ((int)id2) [L173] COND TRUE ((int)id1) != ((int)id3) [L175] COND TRUE ((int)id2) != ((int)id3) [L177] COND TRUE ((int)id1) >= 0 [L179] COND TRUE ((int)id2) >= 0 [L181] COND TRUE ((int)id3) >= 0 [L183] COND TRUE ((int)r1) == 0 [L185] COND TRUE ((int)r2) == 0 [L187] COND TRUE ((int)r3) == 0 [L189] COND TRUE ((int)max1) == ((int)id1) [L191] COND TRUE ((int)max2) == ((int)id2) [L193] COND TRUE ((int)max3) == ((int)id3) [L195] COND TRUE ((int)st1) == 0 [L197] COND TRUE ((int)st2) == 0 [L199] COND TRUE ((int)st3) == 0 [L201] COND TRUE ((int)nl1) == 0 [L203] COND TRUE ((int)nl2) == 0 [L205] COND TRUE ((int)nl3) == 0 [L207] COND TRUE ((int)mode1) == 0 [L209] COND TRUE ((int)mode2) == 0 [L211] COND TRUE ((int)mode3) == 0 [L213] COND TRUE !(newmax1 == 0) [L215] COND TRUE !(newmax2 == 0) [L217] COND TRUE !(newmax3 == 0) [L219] init__tmp___5 = 1 [L220] __return_1863 = init__tmp___5 [L221] main__i2 = __return_1863 [L222] COND TRUE main__i2 != 0 [L224] p12_old = nomsg [L225] p12_new = nomsg [L226] p13_old = nomsg [L227] p13_new = nomsg [L228] p21_old = nomsg [L229] p21_new = nomsg [L230] p23_old = nomsg [L231] p23_new = nomsg [L232] p31_old = nomsg [L233] p31_new = nomsg [L234] p32_old = nomsg [L235] p32_new = nomsg [L236] main__i2 = 0 [L237] COND TRUE main__i2 < 6 [L240] _Bool node1__newmax; [L241] node1__newmax = 0 [L242] COND FALSE !(!(mode1 == 0)) [L248] COND TRUE ((int)r1) < 2 [L250] COND FALSE !(!(ep12 == 0)) [L263] COND FALSE !(!(ep13 == 0)) [L276] mode1 = 1 [L278] _Bool node2__newmax; [L279] node2__newmax = 0 [L280] COND FALSE !(!(mode2 == 0)) [L286] COND TRUE ((int)r2) < 2 [L288] COND FALSE !(!(ep21 == 0)) [L301] COND FALSE !(!(ep23 == 0)) [L314] mode2 = 1 [L316] _Bool node3__newmax; [L317] node3__newmax = 0 [L318] COND FALSE !(!(mode3 == 0)) [L324] COND TRUE ((int)r3) < 2 [L326] COND FALSE !(!(ep31 == 0)) [L339] COND FALSE !(!(ep32 == 0)) [L352] mode3 = 1 [L353] p12_old = p12_new [L354] p12_new = nomsg [L355] p13_old = p13_new [L356] p13_new = nomsg [L357] p21_old = p21_new [L358] p21_new = nomsg [L359] p23_old = p23_new [L360] p23_new = nomsg [L361] p31_old = p31_new [L362] p31_new = nomsg [L363] p32_old = p32_new [L364] p32_new = nomsg [L366] int check__tmp; [L367] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L369] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L371] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L373] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L375] COND FALSE !(((int)r1) >= 2) [L381] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L383] COND TRUE ((int)r1) < 2 [L385] COND FALSE !(((int)r1) >= 2) [L391] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L393] COND TRUE ((int)r1) < 2 [L395] check__tmp = 1 [L396] __return_2009 = check__tmp [L397] main__c1 = __return_2009 [L399] _Bool __tmp_1; [L400] __tmp_1 = main__c1 [L401] _Bool assert__arg; [L402] assert__arg = __tmp_1 [L403] COND FALSE !(assert__arg == 0) [L409] int main____CPAchecker_TMP_0 = main__i2; [L410] main__i2 = main__i2 + 1 [L411] COND TRUE main__i2 < 6 [L414] _Bool node1__newmax; [L415] node1__newmax = 0 [L416] COND TRUE !(mode1 == 0) [L418] r1 = (char)(((int)r1) + 1) [L419] COND FALSE !(!(ep21 == 0)) [L428] COND FALSE !(!(ep31 == 0)) [L437] newmax1 = node1__newmax [L438] COND FALSE !(((int)r1) == 2) [L444] mode1 = 0 [L446] _Bool node2__newmax; [L447] node2__newmax = 0 [L448] COND TRUE !(mode2 == 0) [L450] r2 = (char)(((int)r2) + 1) [L451] COND FALSE !(!(ep12 == 0)) [L460] COND FALSE !(!(ep32 == 0)) [L469] newmax2 = node2__newmax [L470] COND FALSE !(((int)r2) == 2) [L476] mode2 = 0 [L478] _Bool node3__newmax; [L479] node3__newmax = 0 [L480] COND TRUE !(mode3 == 0) [L482] r3 = (char)(((int)r3) + 1) [L483] COND FALSE !(!(ep13 == 0)) [L492] COND FALSE !(!(ep23 == 0)) [L501] newmax3 = node3__newmax [L502] COND FALSE !(((int)r3) == 2) [L508] mode3 = 0 [L509] p12_old = p12_new [L510] p12_new = nomsg [L511] p13_old = p13_new [L512] p13_new = nomsg [L513] p21_old = p21_new [L514] p21_new = nomsg [L515] p23_old = p23_new [L516] p23_new = nomsg [L517] p31_old = p31_new [L518] p31_new = nomsg [L519] p32_old = p32_new [L520] p32_new = nomsg [L522] int check__tmp; [L523] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L525] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L527] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L529] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L531] COND FALSE !(((int)r1) >= 2) [L537] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L539] COND TRUE ((int)r1) < 2 [L541] COND FALSE !(((int)r1) >= 2) [L547] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L549] COND TRUE ((int)r1) < 2 [L551] check__tmp = 1 [L552] __return_2142 = check__tmp [L553] main__c1 = __return_2142 [L555] _Bool __tmp_2; [L556] __tmp_2 = main__c1 [L557] _Bool assert__arg; [L558] assert__arg = __tmp_2 [L559] COND FALSE !(assert__arg == 0) [L565] int main____CPAchecker_TMP_0 = main__i2; [L566] main__i2 = main__i2 + 1 [L567] COND TRUE main__i2 < 6 [L570] _Bool node1__newmax; [L571] node1__newmax = 0 [L572] COND FALSE !(!(mode1 == 0)) [L578] COND TRUE ((int)r1) < 2 [L580] COND FALSE !(!(ep12 == 0)) [L593] COND FALSE !(!(ep13 == 0)) [L606] mode1 = 1 [L608] _Bool node2__newmax; [L609] node2__newmax = 0 [L610] COND FALSE !(!(mode2 == 0)) [L616] COND TRUE ((int)r2) < 2 [L618] COND FALSE !(!(ep21 == 0)) [L631] COND FALSE !(!(ep23 == 0)) [L644] mode2 = 1 [L646] _Bool node3__newmax; [L647] node3__newmax = 0 [L648] COND FALSE !(!(mode3 == 0)) [L654] COND TRUE ((int)r3) < 2 [L656] COND FALSE !(!(ep31 == 0)) [L669] COND FALSE !(!(ep32 == 0)) [L682] mode3 = 1 [L683] p12_old = p12_new [L684] p12_new = nomsg [L685] p13_old = p13_new [L686] p13_new = nomsg [L687] p21_old = p21_new [L688] p21_new = nomsg [L689] p23_old = p23_new [L690] p23_new = nomsg [L691] p31_old = p31_new [L692] p31_new = nomsg [L693] p32_old = p32_new [L694] p32_new = nomsg [L696] int check__tmp; [L697] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L699] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L701] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L703] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L705] COND FALSE !(((int)r1) >= 2) [L711] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L713] COND TRUE ((int)r1) < 2 [L715] COND FALSE !(((int)r1) >= 2) [L721] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L723] COND TRUE ((int)r1) < 2 [L725] check__tmp = 1 [L726] __return_2281 = check__tmp [L727] main__c1 = __return_2281 [L729] _Bool __tmp_3; [L730] __tmp_3 = main__c1 [L731] _Bool assert__arg; [L732] assert__arg = __tmp_3 [L733] COND FALSE !(assert__arg == 0) [L739] int main____CPAchecker_TMP_0 = main__i2; [L740] main__i2 = main__i2 + 1 [L741] COND TRUE main__i2 < 6 [L744] _Bool node1__newmax; [L745] node1__newmax = 0 [L746] COND TRUE !(mode1 == 0) [L748] r1 = (char)(((int)r1) + 1) [L749] COND FALSE !(!(ep21 == 0)) [L758] COND FALSE !(!(ep31 == 0)) [L767] newmax1 = node1__newmax [L768] COND TRUE ((int)r1) == 2 [L770] COND TRUE ((int)max1) == ((int)id1) [L772] st1 = 1 [L774] mode1 = 0 [L776] _Bool node2__newmax; [L777] node2__newmax = 0 [L778] COND TRUE !(mode2 == 0) [L780] r2 = (char)(((int)r2) + 1) [L781] COND FALSE !(!(ep12 == 0)) [L790] COND FALSE !(!(ep32 == 0)) [L799] newmax2 = node2__newmax [L800] COND TRUE ((int)r2) == 2 [L802] COND TRUE ((int)max2) == ((int)id2) [L804] st2 = 1 [L806] mode2 = 0 [L808] _Bool node3__newmax; [L809] node3__newmax = 0 [L810] COND TRUE !(mode3 == 0) [L812] r3 = (char)(((int)r3) + 1) [L813] COND FALSE !(!(ep13 == 0)) [L822] COND FALSE !(!(ep23 == 0)) [L831] newmax3 = node3__newmax [L832] COND TRUE ((int)r3) == 2 [L834] COND TRUE ((int)max3) == ((int)id3) [L836] st3 = 1 [L838] mode3 = 0 [L839] p12_old = p12_new [L840] p12_new = nomsg [L841] p13_old = p13_new [L842] p13_new = nomsg [L843] p21_old = p21_new [L844] p21_new = nomsg [L845] p23_old = p23_new [L846] p23_new = nomsg [L847] p31_old = p31_new [L848] p31_new = nomsg [L849] p32_old = p32_new [L850] p32_new = nomsg [L852] int check__tmp; [L853] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1535] check__tmp = 0 [L881] __return_2419 = check__tmp [L882] main__c1 = __return_2419 [L883] __tmp_2420_0 = main____CPAchecker_TMP_0 [L885] main____CPAchecker_TMP_0 = __tmp_2420_0 [L887] _Bool __tmp_4; [L888] __tmp_4 = main__c1 [L889] _Bool assert__arg; [L890] assert__arg = __tmp_4 [L891] COND TRUE assert__arg == 0 [L893] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 928 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 167.5s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 109.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19680 SDtfs, 15032 SDslu, 14570 SDs, 0 SdLazy, 20323 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75641occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 44.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 100686 StatesRemovedByMinimization, 13 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...