/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 14:16:47,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 14:16:47,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 14:16:47,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 14:16:47,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 14:16:47,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 14:16:47,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 14:16:47,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 14:16:47,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 14:16:47,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 14:16:47,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 14:16:47,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 14:16:47,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 14:16:47,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 14:16:47,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 14:16:47,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 14:16:47,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 14:16:47,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 14:16:47,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 14:16:47,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 14:16:47,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 14:16:47,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 14:16:47,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 14:16:47,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 14:16:47,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 14:16:47,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 14:16:47,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 14:16:47,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 14:16:47,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 14:16:47,496 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 14:16:47,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 14:16:47,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 14:16:47,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 14:16:47,501 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 14:16:47,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 14:16:47,501 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 14:16:47,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 14:16:47,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 14:16:47,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 14:16:47,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 14:16:47,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 14:16:47,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 14:16:47,504 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 14:16:47,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 14:16:47,504 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 14:16:47,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 14:16:47,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 14:16:47,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 14:16:47,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 14:16:47,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 14:16:47,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 14:16:47,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 14:16:47,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 14:16:47,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 14:16:47,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 14:16:47,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 14:16:47,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 14:16:47,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 14:16:47,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 14:16:47,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 14:16:47,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 14:16:47,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 14:16:47,930 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 14:16:47,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-02-23 14:16:48,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923445b48/c9b4659a354943ba98958fe359db688a/FLAG536f70194 [2021-02-23 14:16:48,935 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 14:16:48,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-02-23 14:16:48,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923445b48/c9b4659a354943ba98958fe359db688a/FLAG536f70194 [2021-02-23 14:16:49,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923445b48/c9b4659a354943ba98958fe359db688a [2021-02-23 14:16:49,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 14:16:49,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 14:16:49,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 14:16:49,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 14:16:49,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 14:16:49,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 02:16:49" (1/1) ... [2021-02-23 14:16:49,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ff8bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:16:49, skipping insertion in model container [2021-02-23 14:16:49,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 02:16:49" (1/1) ... [2021-02-23 14:16:49,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 14:16:49,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 14:16:50,988 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.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[62806,62819] [2021-02-23 14:16:51,140 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.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[68506,68519] [2021-02-23 14:16:51,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 14:16:51,974 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 14:16:52,802 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.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[62806,62819] [2021-02-23 14:16:52,937 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.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[68506,68519] [2021-02-23 14:16:53,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 14:16:53,643 INFO L208 MainTranslator]: Completed translation [2021-02-23 14:16:53,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:16:53 WrapperNode [2021-02-23 14:16:53,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 14:16:53,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 14:16:53,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 14:16:53,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 14:16:53,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:16:53" (1/1) ... [2021-02-23 14:16:53,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:16:53" (1/1) ... [2021-02-23 14:16:53,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:16:53" (1/1) ... [2021-02-23 14:16:53,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:16:53" (1/1) ... [2021-02-23 14:16:53,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:16:53" (1/1) ... [2021-02-23 14:16:53,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:16:53" (1/1) ... [2021-02-23 14:16:53,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:16:53" (1/1) ... [2021-02-23 14:16:53,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 14:16:53,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 14:16:53,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 14:16:53,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 14:16:53,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:16:53" (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 14:16:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 14:16:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 14:16:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 14:16:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 14:16:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 14:16:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 14:16:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 14:16:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 14:16:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 14:16:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-23 14:16:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 14:16:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-23 14:16:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 14:16:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-23 14:16:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-23 14:16:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-23 14:16:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-23 14:16:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-23 14:16:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2021-02-23 14:16:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2021-02-23 14:16:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-23 14:16:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-23 14:16:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 14:16:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 14:16:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 14:16:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 14:16:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 14:16:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 14:16:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 14:17:00,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 14:17:00,763 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 14:17:00,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 02:17:00 BoogieIcfgContainer [2021-02-23 14:17:00,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 14:17:00,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 14:17:00,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 14:17:00,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 14:17:00,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 02:16:49" (1/3) ... [2021-02-23 14:17:00,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bde751b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 02:17:00, skipping insertion in model container [2021-02-23 14:17:00,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:16:53" (2/3) ... [2021-02-23 14:17:00,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bde751b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 02:17:00, skipping insertion in model container [2021-02-23 14:17:00,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 02:17:00" (3/3) ... [2021-02-23 14:17:00,782 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-02-23 14:17:00,790 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 14:17:00,798 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-02-23 14:17:00,818 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-02-23 14:17:00,867 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 14:17:00,868 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 14:17:00,868 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 14:17:00,868 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 14:17:00,868 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 14:17:00,868 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 14:17:00,868 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 14:17:00,868 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 14:17:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states. [2021-02-23 14:17:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-02-23 14:17:00,986 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:17:00,988 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] [2021-02-23 14:17:00,988 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:17:00,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:17:00,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1510164991, now seen corresponding path program 1 times [2021-02-23 14:17:01,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:17:01,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167321045] [2021-02-23 14:17:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:17:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:01,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:01,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:01,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:01,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:17:01,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:01,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:17:01,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:01,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:03,425 WARN L202 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:17:03,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:17:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:03,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:03,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:03,663 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 14:17:03,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167321045] [2021-02-23 14:17:03,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:17:03,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 14:17:03,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651904484] [2021-02-23 14:17:03,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 14:17:03,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:17:03,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 14:17:03,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:17:03,690 INFO L87 Difference]: Start difference. First operand 2515 states. Second operand 5 states. [2021-02-23 14:17:23,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:17:23,047 INFO L93 Difference]: Finished difference Result 4483 states and 7776 transitions. [2021-02-23 14:17:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 14:17:23,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2021-02-23 14:17:23,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:17:23,100 INFO L225 Difference]: With dead ends: 4483 [2021-02-23 14:17:23,100 INFO L226 Difference]: Without dead ends: 2511 [2021-02-23 14:17:23,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 14:17:23,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2021-02-23 14:17:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2021-02-23 14:17:23,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2021-02-23 14:17:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4317 transitions. [2021-02-23 14:17:23,303 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4317 transitions. Word has length 322 [2021-02-23 14:17:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:17:23,306 INFO L480 AbstractCegarLoop]: Abstraction has 2511 states and 4317 transitions. [2021-02-23 14:17:23,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 14:17:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4317 transitions. [2021-02-23 14:17:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2021-02-23 14:17:23,322 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:17:23,323 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] [2021-02-23 14:17:23,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 14:17:23,324 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:17:23,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:17:23,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1828683164, now seen corresponding path program 1 times [2021-02-23 14:17:23,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:17:23,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483061130] [2021-02-23 14:17:23,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:17:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:23,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:23,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:23,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:23,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:17:23,847 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-23 14:17:23,848 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-23 14:17:23,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:23,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:25,256 WARN L202 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:17:25,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:17:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:25,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:25,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:25,467 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 14:17:25,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483061130] [2021-02-23 14:17:25,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:17:25,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:17:25,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631939167] [2021-02-23 14:17:25,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:17:25,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:17:25,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:17:25,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:17:25,472 INFO L87 Difference]: Start difference. First operand 2511 states and 4317 transitions. Second operand 4 states. [2021-02-23 14:17:26,794 WARN L202 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 441 [2021-02-23 14:17:54,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:17:54,591 INFO L93 Difference]: Finished difference Result 6234 states and 10658 transitions. [2021-02-23 14:17:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:17:54,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 386 [2021-02-23 14:17:54,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:17:54,617 INFO L225 Difference]: With dead ends: 6234 [2021-02-23 14:17:54,618 INFO L226 Difference]: Without dead ends: 4315 [2021-02-23 14:17:54,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:17:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2021-02-23 14:17:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 4311. [2021-02-23 14:17:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2021-02-23 14:17:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 7334 transitions. [2021-02-23 14:17:54,759 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 7334 transitions. Word has length 386 [2021-02-23 14:17:54,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:17:54,760 INFO L480 AbstractCegarLoop]: Abstraction has 4311 states and 7334 transitions. [2021-02-23 14:17:54,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:17:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 7334 transitions. [2021-02-23 14:17:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2021-02-23 14:17:54,776 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:17:54,776 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] [2021-02-23 14:17:54,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 14:17:54,777 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:17:54,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:17:54,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1163439438, now seen corresponding path program 1 times [2021-02-23 14:17:54,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:17:54,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052221042] [2021-02-23 14:17:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:17:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:55,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:55,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:55,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:55,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 14:17:55,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:55,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:56,173 WARN L202 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:17:56,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:17:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:56,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:56,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:56,432 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 14:17:56,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052221042] [2021-02-23 14:17:56,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:17:56,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:17:56,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120801780] [2021-02-23 14:17:56,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:17:56,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:17:56,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:17:56,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:17:56,435 INFO L87 Difference]: Start difference. First operand 4311 states and 7334 transitions. Second operand 4 states. [2021-02-23 14:17:57,725 WARN L202 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 443 [2021-02-23 14:18:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:18:25,473 INFO L93 Difference]: Finished difference Result 7280 states and 12405 transitions. [2021-02-23 14:18:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:18:25,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 391 [2021-02-23 14:18:25,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:18:25,502 INFO L225 Difference]: With dead ends: 7280 [2021-02-23 14:18:25,502 INFO L226 Difference]: Without dead ends: 5350 [2021-02-23 14:18:25,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:18:25,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2021-02-23 14:18:25,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5346. [2021-02-23 14:18:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5346 states. [2021-02-23 14:18:25,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 9097 transitions. [2021-02-23 14:18:25,678 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 9097 transitions. Word has length 391 [2021-02-23 14:18:25,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:18:25,678 INFO L480 AbstractCegarLoop]: Abstraction has 5346 states and 9097 transitions. [2021-02-23 14:18:25,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:18:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 9097 transitions. [2021-02-23 14:18:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-02-23 14:18:25,698 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:18:25,699 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] [2021-02-23 14:18:25,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 14:18:25,699 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:18:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:18:25,700 INFO L82 PathProgramCache]: Analyzing trace with hash 355050895, now seen corresponding path program 1 times [2021-02-23 14:18:25,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:18:25,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228332485] [2021-02-23 14:18:25,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:18:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:18:26,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:18:26,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:18:26,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:18:26,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:18:26,037 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-23 14:18:26,038 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-23 14:18:26,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:18:26,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:18:27,281 WARN L202 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:18:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:18:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:18:27,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:18:27,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:18:27,506 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 14:18:27,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228332485] [2021-02-23 14:18:27,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:18:27,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:18:27,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222886564] [2021-02-23 14:18:27,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:18:27,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:18:27,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:18:27,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:18:27,510 INFO L87 Difference]: Start difference. First operand 5346 states and 9097 transitions. Second operand 4 states. [2021-02-23 14:18:28,827 WARN L202 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 441 [2021-02-23 14:18:58,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:18:58,630 INFO L93 Difference]: Finished difference Result 14521 states and 24616 transitions. [2021-02-23 14:18:58,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:18:58,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 395 [2021-02-23 14:18:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:18:58,674 INFO L225 Difference]: With dead ends: 14521 [2021-02-23 14:18:58,674 INFO L226 Difference]: Without dead ends: 9795 [2021-02-23 14:18:58,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:18:58,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9795 states. [2021-02-23 14:18:58,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9795 to 9791. [2021-02-23 14:18:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9791 states. [2021-02-23 14:18:58,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9791 states to 9791 states and 16577 transitions. [2021-02-23 14:18:58,972 INFO L78 Accepts]: Start accepts. Automaton has 9791 states and 16577 transitions. Word has length 395 [2021-02-23 14:18:58,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:18:58,973 INFO L480 AbstractCegarLoop]: Abstraction has 9791 states and 16577 transitions. [2021-02-23 14:18:58,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:18:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand 9791 states and 16577 transitions. [2021-02-23 14:18:58,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-02-23 14:18:58,995 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:18:58,995 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] [2021-02-23 14:18:58,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 14:18:58,996 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:18:58,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:18:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1442697717, now seen corresponding path program 1 times [2021-02-23 14:18:58,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:18:58,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452546766] [2021-02-23 14:18:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:18:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:18:59,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:18:59,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:18:59,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:18:59,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 14:18:59,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:18:59,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:19:00,608 WARN L202 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:19:00,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:19:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:19:00,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:19:00,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:19:00,806 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 14:19:00,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452546766] [2021-02-23 14:19:00,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:19:00,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:19:00,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641666551] [2021-02-23 14:19:00,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:19:00,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:19:00,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:19:00,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:19:00,809 INFO L87 Difference]: Start difference. First operand 9791 states and 16577 transitions. Second operand 4 states. [2021-02-23 14:19:02,156 WARN L202 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 443 [2021-02-23 14:19:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:19:31,491 INFO L93 Difference]: Finished difference Result 17611 states and 29837 transitions. [2021-02-23 14:19:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:19:31,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2021-02-23 14:19:31,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:19:31,537 INFO L225 Difference]: With dead ends: 17611 [2021-02-23 14:19:31,538 INFO L226 Difference]: Without dead ends: 12874 [2021-02-23 14:19:31,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:19:31,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12874 states. [2021-02-23 14:19:31,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12874 to 12870. [2021-02-23 14:19:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12870 states. [2021-02-23 14:19:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12870 states to 12870 states and 21779 transitions. [2021-02-23 14:19:31,955 INFO L78 Accepts]: Start accepts. Automaton has 12870 states and 21779 transitions. Word has length 400 [2021-02-23 14:19:31,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:19:31,956 INFO L480 AbstractCegarLoop]: Abstraction has 12870 states and 21779 transitions. [2021-02-23 14:19:31,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:19:31,956 INFO L276 IsEmpty]: Start isEmpty. Operand 12870 states and 21779 transitions. [2021-02-23 14:19:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-02-23 14:19:31,978 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:19:31,979 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] [2021-02-23 14:19:31,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 14:19:31,979 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:19:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:19:31,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1697340372, now seen corresponding path program 1 times [2021-02-23 14:19:31,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:19:31,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218231837] [2021-02-23 14:19:31,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:19:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:19:32,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:19:32,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:19:32,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:19:32,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:19:32,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:19:32,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:19:33,543 WARN L202 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:19:33,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:19:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:19:33,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:19:33,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:19:33,779 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 14:19:33,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218231837] [2021-02-23 14:19:33,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:19:33,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:19:33,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539976339] [2021-02-23 14:19:33,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:19:33,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:19:33,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:19:33,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:19:33,782 INFO L87 Difference]: Start difference. First operand 12870 states and 21779 transitions. Second operand 4 states. [2021-02-23 14:19:35,144 WARN L202 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 441 [2021-02-23 14:20:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:20:06,450 INFO L93 Difference]: Finished difference Result 36509 states and 61606 transitions. [2021-02-23 14:20:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:20:06,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 404 [2021-02-23 14:20:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:20:06,503 INFO L225 Difference]: With dead ends: 36509 [2021-02-23 14:20:06,503 INFO L226 Difference]: Without dead ends: 24287 [2021-02-23 14:20:06,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:20:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24287 states. [2021-02-23 14:20:07,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24287 to 24283. [2021-02-23 14:20:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24283 states. [2021-02-23 14:20:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24283 states to 24283 states and 40885 transitions. [2021-02-23 14:20:07,295 INFO L78 Accepts]: Start accepts. Automaton has 24283 states and 40885 transitions. Word has length 404 [2021-02-23 14:20:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:20:07,295 INFO L480 AbstractCegarLoop]: Abstraction has 24283 states and 40885 transitions. [2021-02-23 14:20:07,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:20:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 24283 states and 40885 transitions. [2021-02-23 14:20:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-02-23 14:20:07,332 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:20:07,333 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] [2021-02-23 14:20:07,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 14:20:07,333 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:20:07,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:20:07,334 INFO L82 PathProgramCache]: Analyzing trace with hash -551708622, now seen corresponding path program 1 times [2021-02-23 14:20:07,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:20:07,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458771946] [2021-02-23 14:20:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:20:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:20:07,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:20:07,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:20:07,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:20:07,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 14:20:07,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:20:07,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:20:08,827 WARN L202 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:20:08,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:20:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:20:08,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:20:08,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:20:09,138 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 14:20:09,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458771946] [2021-02-23 14:20:09,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:20:09,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:20:09,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263883928] [2021-02-23 14:20:09,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:20:09,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:20:09,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:20:09,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:20:09,146 INFO L87 Difference]: Start difference. First operand 24283 states and 40885 transitions. Second operand 4 states. [2021-02-23 14:20:10,478 WARN L202 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 443 [2021-02-23 14:20:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:20:40,805 INFO L93 Difference]: Finished difference Result 44887 states and 75675 transitions. [2021-02-23 14:20:40,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:20:40,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 409 [2021-02-23 14:20:40,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:20:40,876 INFO L225 Difference]: With dead ends: 44887 [2021-02-23 14:20:40,876 INFO L226 Difference]: Without dead ends: 32654 [2021-02-23 14:20:40,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:20:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32654 states. [2021-02-23 14:20:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32654 to 32650. [2021-02-23 14:20:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32650 states. [2021-02-23 14:20:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32650 states to 32650 states and 54937 transitions. [2021-02-23 14:20:42,014 INFO L78 Accepts]: Start accepts. Automaton has 32650 states and 54937 transitions. Word has length 409 [2021-02-23 14:20:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:20:42,015 INFO L480 AbstractCegarLoop]: Abstraction has 32650 states and 54937 transitions. [2021-02-23 14:20:42,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:20:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 32650 states and 54937 transitions. [2021-02-23 14:20:42,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-02-23 14:20:42,061 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:20:42,062 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] [2021-02-23 14:20:42,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 14:20:42,062 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:20:42,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:20:42,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2085733665, now seen corresponding path program 1 times [2021-02-23 14:20:42,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:20:42,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819068039] [2021-02-23 14:20:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:20:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:20:42,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:20:42,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:20:42,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:20:42,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:20:42,349 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-23 14:20:42,350 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-23 14:20:42,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:20:42,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:20:43,751 WARN L202 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:20:43,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:20:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:20:43,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:20:43,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:20:43,933 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 14:20:43,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819068039] [2021-02-23 14:20:43,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:20:43,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:20:43,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369346946] [2021-02-23 14:20:43,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:20:43,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:20:43,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:20:43,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:20:43,935 INFO L87 Difference]: Start difference. First operand 32650 states and 54937 transitions. Second operand 4 states. [2021-02-23 14:20:45,304 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 441 [2021-02-23 14:21:17,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:21:17,872 INFO L93 Difference]: Finished difference Result 94233 states and 158132 transitions. [2021-02-23 14:21:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:21:17,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 413 [2021-02-23 14:21:17,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:21:17,970 INFO L225 Difference]: With dead ends: 94233 [2021-02-23 14:21:17,970 INFO L226 Difference]: Without dead ends: 62259 [2021-02-23 14:21:18,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:21:18,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62259 states. [2021-02-23 14:21:19,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62259 to 62255. [2021-02-23 14:21:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62255 states. [2021-02-23 14:21:19,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62255 states to 62255 states and 104167 transitions. [2021-02-23 14:21:19,616 INFO L78 Accepts]: Start accepts. Automaton has 62255 states and 104167 transitions. Word has length 413 [2021-02-23 14:21:19,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:21:19,616 INFO L480 AbstractCegarLoop]: Abstraction has 62255 states and 104167 transitions. [2021-02-23 14:21:19,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:21:19,616 INFO L276 IsEmpty]: Start isEmpty. Operand 62255 states and 104167 transitions. [2021-02-23 14:21:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-02-23 14:21:19,673 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:21:19,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:21:19,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 14:21:19,674 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:21:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:21:19,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1376496709, now seen corresponding path program 1 times [2021-02-23 14:21:19,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:21:19,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94820417] [2021-02-23 14:21:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:21:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:21:20,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:21:20,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:21:20,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:21:20,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 14:21:20,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:21:20,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:21:21,864 WARN L202 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:21:21,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:21:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:21:21,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:21:21,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:21:22,119 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 14:21:22,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94820417] [2021-02-23 14:21:22,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:21:22,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:21:22,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877052217] [2021-02-23 14:21:22,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:21:22,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:21:22,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:21:22,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:21:22,122 INFO L87 Difference]: Start difference. First operand 62255 states and 104167 transitions. Second operand 4 states. [2021-02-23 14:21:23,471 WARN L202 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 443 [2021-02-23 14:21:55,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:21:55,275 INFO L93 Difference]: Finished difference Result 116011 states and 194409 transitions. [2021-02-23 14:21:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:21:55,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 418 [2021-02-23 14:21:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:21:55,387 INFO L225 Difference]: With dead ends: 116011 [2021-02-23 14:21:55,387 INFO L226 Difference]: Without dead ends: 84026 [2021-02-23 14:21:55,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:21:55,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84026 states. [2021-02-23 14:21:57,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84026 to 84022. [2021-02-23 14:21:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84022 states. [2021-02-23 14:21:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84022 states to 84022 states and 140431 transitions. [2021-02-23 14:21:57,867 INFO L78 Accepts]: Start accepts. Automaton has 84022 states and 140431 transitions. Word has length 418 [2021-02-23 14:21:57,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:21:57,868 INFO L480 AbstractCegarLoop]: Abstraction has 84022 states and 140431 transitions. [2021-02-23 14:21:57,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:21:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 84022 states and 140431 transitions. [2021-02-23 14:21:57,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-02-23 14:21:57,952 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:21:57,952 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] [2021-02-23 14:21:57,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 14:21:57,953 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:21:57,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:21:57,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1054739556, now seen corresponding path program 1 times [2021-02-23 14:21:57,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:21:57,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120267321] [2021-02-23 14:21:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:21:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:21:58,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:21:58,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:21:58,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:21:58,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:21:58,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:21:58,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:21:59,846 WARN L202 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:21:59,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:21:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:21:59,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:21:59,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:22:00,033 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 14:22:00,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120267321] [2021-02-23 14:22:00,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:22:00,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:22:00,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349303197] [2021-02-23 14:22:00,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:22:00,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:22:00,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:22:00,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:22:00,035 INFO L87 Difference]: Start difference. First operand 84022 states and 140431 transitions. Second operand 4 states. [2021-02-23 14:22:01,486 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 441 [2021-02-23 14:22:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:22:36,641 INFO L93 Difference]: Finished difference Result 243661 states and 406034 transitions. [2021-02-23 14:22:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:22:36,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 422 [2021-02-23 14:22:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:22:37,032 INFO L225 Difference]: With dead ends: 243661 [2021-02-23 14:22:37,033 INFO L226 Difference]: Without dead ends: 160343 [2021-02-23 14:22:37,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:22:37,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160343 states. [2021-02-23 14:22:41,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160343 to 160339. [2021-02-23 14:22:41,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160339 states. [2021-02-23 14:22:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160339 states to 160339 states and 266233 transitions. [2021-02-23 14:22:42,147 INFO L78 Accepts]: Start accepts. Automaton has 160339 states and 266233 transitions. Word has length 422 [2021-02-23 14:22:42,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:22:42,148 INFO L480 AbstractCegarLoop]: Abstraction has 160339 states and 266233 transitions. [2021-02-23 14:22:42,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:22:42,148 INFO L276 IsEmpty]: Start isEmpty. Operand 160339 states and 266233 transitions. [2021-02-23 14:22:42,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-02-23 14:22:42,550 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:22:42,563 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] [2021-02-23 14:22:42,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 14:22:42,564 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:22:42,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:22:42,565 INFO L82 PathProgramCache]: Analyzing trace with hash 656566202, now seen corresponding path program 1 times [2021-02-23 14:22:42,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:22:42,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563153261] [2021-02-23 14:22:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:22:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:22:42,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:22:42,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:22:42,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:22:42,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 14:22:42,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:22:42,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:22:44,237 WARN L202 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:22:44,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:22:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:22:44,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:22:44,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:22:44,523 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 14:22:44,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563153261] [2021-02-23 14:22:44,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:22:44,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:22:44,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141647010] [2021-02-23 14:22:44,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:22:44,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:22:44,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:22:44,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:22:44,526 INFO L87 Difference]: Start difference. First operand 160339 states and 266233 transitions. Second operand 4 states. [2021-02-23 14:22:45,670 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 443 [2021-02-23 14:23:21,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:23:21,308 INFO L93 Difference]: Finished difference Result 298271 states and 495971 transitions. [2021-02-23 14:23:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:23:21,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2021-02-23 14:23:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:23:21,642 INFO L225 Difference]: With dead ends: 298271 [2021-02-23 14:23:21,642 INFO L226 Difference]: Without dead ends: 214942 [2021-02-23 14:23:21,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:23:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214942 states. [2021-02-23 14:23:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214942 to 214938. [2021-02-23 14:23:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214938 states. [2021-02-23 14:23:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214938 states to 214938 states and 356165 transitions. [2021-02-23 14:23:28,574 INFO L78 Accepts]: Start accepts. Automaton has 214938 states and 356165 transitions. Word has length 427 [2021-02-23 14:23:28,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:23:28,575 INFO L480 AbstractCegarLoop]: Abstraction has 214938 states and 356165 transitions. [2021-02-23 14:23:28,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:23:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 214938 states and 356165 transitions. [2021-02-23 14:23:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-02-23 14:23:28,731 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:23:28,731 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] [2021-02-23 14:23:28,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 14:23:28,731 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:23:28,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:23:28,732 INFO L82 PathProgramCache]: Analyzing trace with hash -841886585, now seen corresponding path program 1 times [2021-02-23 14:23:28,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:23:28,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697407301] [2021-02-23 14:23:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:23:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:23:29,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:23:29,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:23:29,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:23:29,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:23:29,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:23:29,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 14:23:29,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:23:29,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 14:23:29,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:23:29,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 14:23:29,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:23:29,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 14:23:29,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:23:29,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 14:23:29,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:23:29,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:23:30,934 WARN L202 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:23:30,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:23:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:23:30,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:23:30,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:23:31,302 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 14:23:31,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697407301] [2021-02-23 14:23:31,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:23:31,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 14:23:31,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848520713] [2021-02-23 14:23:31,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 14:23:31,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:23:31,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 14:23:31,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-23 14:23:31,304 INFO L87 Difference]: Start difference. First operand 214938 states and 356165 transitions. Second operand 8 states. [2021-02-23 14:23:34,367 WARN L202 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 450 DAG size of output: 447 [2021-02-23 14:25:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:25:25,565 INFO L93 Difference]: Finished difference Result 1457068 states and 2420300 transitions. [2021-02-23 14:25:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 14:25:25,567 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2021-02-23 14:25:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:25:29,771 INFO L225 Difference]: With dead ends: 1457068 [2021-02-23 14:25:29,771 INFO L226 Difference]: Without dead ends: 1242836 [2021-02-23 14:25:30,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-02-23 14:25:30,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242836 states. [2021-02-23 14:25:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242836 to 427813. [2021-02-23 14:25:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427813 states. [2021-02-23 14:25:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427813 states to 427813 states and 706031 transitions. [2021-02-23 14:25:57,851 INFO L78 Accepts]: Start accepts. Automaton has 427813 states and 706031 transitions. Word has length 431 [2021-02-23 14:25:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:25:57,852 INFO L480 AbstractCegarLoop]: Abstraction has 427813 states and 706031 transitions. [2021-02-23 14:25:57,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 14:25:57,852 INFO L276 IsEmpty]: Start isEmpty. Operand 427813 states and 706031 transitions. [2021-02-23 14:25:58,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-02-23 14:25:58,205 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:25:58,205 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] [2021-02-23 14:25:58,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 14:25:58,205 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:25:58,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:25:58,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1706968237, now seen corresponding path program 1 times [2021-02-23 14:25:58,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:25:58,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472504944] [2021-02-23 14:25:58,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:25:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:25:58,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:25:58,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:25:58,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:25:58,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:25:58,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:25:58,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 14:25:58,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:25:58,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:26:00,283 WARN L202 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 439 [2021-02-23 14:26:00,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:26:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:26:00,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:26:00,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:26:00,554 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 14:26:00,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472504944] [2021-02-23 14:26:00,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:26:00,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 14:26:00,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697514059] [2021-02-23 14:26:00,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 14:26:00,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:26:00,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 14:26:00,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:26:00,556 INFO L87 Difference]: Start difference. First operand 427813 states and 706031 transitions. Second operand 5 states. [2021-02-23 14:26:01,982 WARN L202 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 442 [2021-02-23 14:27:13,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:27:13,293 INFO L93 Difference]: Finished difference Result 1272473 states and 2107267 transitions. [2021-02-23 14:27:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 14:27:13,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 433 [2021-02-23 14:27:13,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:27:15,585 INFO L225 Difference]: With dead ends: 1272473 [2021-02-23 14:27:15,585 INFO L226 Difference]: Without dead ends: 845366 [2021-02-23 14:27:16,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-02-23 14:27:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845366 states. [2021-02-23 14:27:49,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845366 to 705994. [2021-02-23 14:27:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705994 states. [2021-02-23 14:27:53,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705994 states to 705994 states and 1165461 transitions. [2021-02-23 14:27:53,970 INFO L78 Accepts]: Start accepts. Automaton has 705994 states and 1165461 transitions. Word has length 433 [2021-02-23 14:27:53,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:27:53,971 INFO L480 AbstractCegarLoop]: Abstraction has 705994 states and 1165461 transitions. [2021-02-23 14:27:53,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 14:27:53,971 INFO L276 IsEmpty]: Start isEmpty. Operand 705994 states and 1165461 transitions.