/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:30:36,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:30:36,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:30:36,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:30:36,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:30:36,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:30:36,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:30:36,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:30:36,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:30:36,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:30:36,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:30:36,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:30:36,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:30:36,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:30:36,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:30:36,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:30:36,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:30:36,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:30:36,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:30:36,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:30:36,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:30:36,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:30:36,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:30:36,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:30:36,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 02:30:36,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 02:30:36,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 02:30:36,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 02:30:36,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 02:30:36,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 02:30:36,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:30:36,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:30:36,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:30:36,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:30:36,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:30:36,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:30:36,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:30:36,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:30:36,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:30:36,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:30:36,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:30:36,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:30:36,291 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:30:36,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:30:36,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:30:36,294 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:30:36,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:30:36,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:30:36,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:30:36,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:30:36,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:30:36,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:30:36,295 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:30:36,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:30:36,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:30:36,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:30:36,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:30:36,296 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:30:36,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:30:36,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:30:36,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:30:36,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:30:36,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:30:36,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:30:36,297 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:30:36,298 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:30:36,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:30:36,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:30:36,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:30:36,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:30:36,707 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:30:36,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-22 02:30:36,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37581cfec/396424039edd444fac828c63093da8bc/FLAGd5661f505 [2021-02-22 02:30:37,613 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:30:37,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-22 02:30:37,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37581cfec/396424039edd444fac828c63093da8bc/FLAGd5661f505 [2021-02-22 02:30:37,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37581cfec/396424039edd444fac828c63093da8bc [2021-02-22 02:30:37,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:30:37,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:30:37,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:30:37,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:30:37,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:30:37,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:30:37" (1/1) ... [2021-02-22 02:30:37,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f7806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:30:37, skipping insertion in model container [2021-02-22 02:30:37,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:30:37" (1/1) ... [2021-02-22 02:30:37,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:30:37,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:30:38,294 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15023,15036] [2021-02-22 02:30:38,309 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15670,15683] [2021-02-22 02:30:38,330 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17054,17067] [2021-02-22 02:30:38,346 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18030,18043] [2021-02-22 02:30:38,424 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27395,27408] [2021-02-22 02:30:38,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:30:38,527 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:30:38,679 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15023,15036] [2021-02-22 02:30:38,687 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15670,15683] [2021-02-22 02:30:38,700 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17054,17067] [2021-02-22 02:30:38,711 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18030,18043] [2021-02-22 02:30:38,766 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27395,27408] [2021-02-22 02:30:38,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:30:38,840 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:30:38,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:30:38 WrapperNode [2021-02-22 02:30:38,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:30:38,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:30:38,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:30:38,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:30:38,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:30:38" (1/1) ... [2021-02-22 02:30:38,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:30:38" (1/1) ... [2021-02-22 02:30:38,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:30:38" (1/1) ... [2021-02-22 02:30:38,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:30:38" (1/1) ... [2021-02-22 02:30:38,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:30:38" (1/1) ... [2021-02-22 02:30:38,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:30:38" (1/1) ... [2021-02-22 02:30:39,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:30:38" (1/1) ... [2021-02-22 02:30:39,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:30:39,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:30:39,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:30:39,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:30:39,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:30:38" (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 [2021-02-22 02:30:39,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:30:39,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:30:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:30:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:30:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:30:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:30:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:30:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:30:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:30:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-22 02:30:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2021-02-22 02:30:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-22 02:30:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-22 02:30:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:30:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-22 02:30:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-22 02:30:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-22 02:30:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-22 02:30:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-22 02:30:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-22 02:30:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-22 02:30:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:30:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:30:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:30:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:30:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:30:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:30:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:30:41,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:30:41,544 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 02:30:41,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:30:41 BoogieIcfgContainer [2021-02-22 02:30:41,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:30:41,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:30:41,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:30:41,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:30:41,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:30:37" (1/3) ... [2021-02-22 02:30:41,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2bab1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:30:41, skipping insertion in model container [2021-02-22 02:30:41,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:30:38" (2/3) ... [2021-02-22 02:30:41,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2bab1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:30:41, skipping insertion in model container [2021-02-22 02:30:41,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:30:41" (3/3) ... [2021-02-22 02:30:41,562 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-22 02:30:41,573 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:30:41,580 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-02-22 02:30:41,600 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-02-22 02:30:41,627 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:30:41,628 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:30:41,628 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:30:41,628 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:30:41,628 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:30:41,628 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:30:41,628 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:30:41,628 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:30:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states. [2021-02-22 02:30:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-02-22 02:30:41,727 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:30:41,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:30:41,732 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:30:41,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:30:41,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2047985623, now seen corresponding path program 1 times [2021-02-22 02:30:41,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:30:41,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597062059] [2021-02-22 02:30:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:30:41,882 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:30:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:30:42,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:42,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:30:42,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:42,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:30:42,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:42,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:30:43,233 WARN L202 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2021-02-22 02:30:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:30:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:30:43,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:43,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:30:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:30:43,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597062059] [2021-02-22 02:30:43,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:30:43,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:30:43,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014931823] [2021-02-22 02:30:43,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:30:43,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:30:43,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:30:43,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:30:43,801 INFO L87 Difference]: Start difference. First operand 1241 states. Second operand 4 states. [2021-02-22 02:30:48,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:30:48,715 INFO L93 Difference]: Finished difference Result 2027 states and 2609 transitions. [2021-02-22 02:30:48,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:30:48,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 464 [2021-02-22 02:30:48,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:30:48,754 INFO L225 Difference]: With dead ends: 2027 [2021-02-22 02:30:48,755 INFO L226 Difference]: Without dead ends: 1453 [2021-02-22 02:30:48,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:30:48,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-02-22 02:30:48,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1446. [2021-02-22 02:30:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1446 states. [2021-02-22 02:30:48,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1731 transitions. [2021-02-22 02:30:48,942 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1731 transitions. Word has length 464 [2021-02-22 02:30:48,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:30:48,944 INFO L480 AbstractCegarLoop]: Abstraction has 1446 states and 1731 transitions. [2021-02-22 02:30:48,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:30:48,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1731 transitions. [2021-02-22 02:30:48,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-02-22 02:30:48,955 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:30:48,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:30:48,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:30:48,956 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:30:48,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:30:48,957 INFO L82 PathProgramCache]: Analyzing trace with hash 674312137, now seen corresponding path program 1 times [2021-02-22 02:30:48,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:30:48,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004022323] [2021-02-22 02:30:48,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:30:48,963 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:30:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:30:49,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:49,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:30:49,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:49,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:30:49,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:49,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:30:49,701 WARN L202 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2021-02-22 02:30:49,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:30:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:30:49,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:49,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:30:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:30:50,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004022323] [2021-02-22 02:30:50,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:30:50,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:30:50,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818475626] [2021-02-22 02:30:50,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:30:50,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:30:50,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:30:50,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:30:50,078 INFO L87 Difference]: Start difference. First operand 1446 states and 1731 transitions. Second operand 4 states. [2021-02-22 02:30:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:30:53,959 INFO L93 Difference]: Finished difference Result 2643 states and 3276 transitions. [2021-02-22 02:30:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:30:53,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 464 [2021-02-22 02:30:53,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:30:53,973 INFO L225 Difference]: With dead ends: 2643 [2021-02-22 02:30:53,973 INFO L226 Difference]: Without dead ends: 2152 [2021-02-22 02:30:53,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:30:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-02-22 02:30:54,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2140. [2021-02-22 02:30:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2140 states. [2021-02-22 02:30:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2627 transitions. [2021-02-22 02:30:54,090 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2627 transitions. Word has length 464 [2021-02-22 02:30:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:30:54,091 INFO L480 AbstractCegarLoop]: Abstraction has 2140 states and 2627 transitions. [2021-02-22 02:30:54,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:30:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2627 transitions. [2021-02-22 02:30:54,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-02-22 02:30:54,105 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:30:54,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:30:54,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:30:54,106 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:30:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:30:54,107 INFO L82 PathProgramCache]: Analyzing trace with hash -248359671, now seen corresponding path program 1 times [2021-02-22 02:30:54,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:30:54,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22501327] [2021-02-22 02:30:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:30:54,112 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:30:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:30:54,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:54,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:30:54,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:54,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:30:54,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:54,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:30:54,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:54,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:30:54,823 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2021-02-22 02:30:54,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:30:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:30:54,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:30:54,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:30:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:30:55,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22501327] [2021-02-22 02:30:55,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:30:55,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:30:55,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447054588] [2021-02-22 02:30:55,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:30:55,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:30:55,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:30:55,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:30:55,145 INFO L87 Difference]: Start difference. First operand 2140 states and 2627 transitions. Second operand 5 states. [2021-02-22 02:31:01,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:31:01,590 INFO L93 Difference]: Finished difference Result 5918 states and 7328 transitions. [2021-02-22 02:31:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 02:31:01,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 464 [2021-02-22 02:31:01,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:31:01,611 INFO L225 Difference]: With dead ends: 5918 [2021-02-22 02:31:01,611 INFO L226 Difference]: Without dead ends: 3973 [2021-02-22 02:31:01,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:31:01,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2021-02-22 02:31:01,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3842. [2021-02-22 02:31:01,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3842 states. [2021-02-22 02:31:01,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3842 states to 3842 states and 4750 transitions. [2021-02-22 02:31:01,891 INFO L78 Accepts]: Start accepts. Automaton has 3842 states and 4750 transitions. Word has length 464 [2021-02-22 02:31:01,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:31:01,892 INFO L480 AbstractCegarLoop]: Abstraction has 3842 states and 4750 transitions. [2021-02-22 02:31:01,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:31:01,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3842 states and 4750 transitions. [2021-02-22 02:31:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-02-22 02:31:01,910 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:31:01,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:31:01,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:31:01,911 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:31:01,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:31:01,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1990509529, now seen corresponding path program 1 times [2021-02-22 02:31:01,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:31:01,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469260328] [2021-02-22 02:31:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:31:01,922 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:31:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:31:02,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:02,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:02,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:02,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:31:02,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:02,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:02,498 WARN L202 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2021-02-22 02:31:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:31:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:31:02,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:02,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:31:02,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469260328] [2021-02-22 02:31:02,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:31:02,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:31:02,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882518785] [2021-02-22 02:31:02,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:31:02,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:31:02,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:31:02,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:31:02,839 INFO L87 Difference]: Start difference. First operand 3842 states and 4750 transitions. Second operand 4 states. [2021-02-22 02:31:07,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:31:07,652 INFO L93 Difference]: Finished difference Result 11099 states and 13799 transitions. [2021-02-22 02:31:07,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:31:07,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2021-02-22 02:31:07,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:31:07,691 INFO L225 Difference]: With dead ends: 11099 [2021-02-22 02:31:07,691 INFO L226 Difference]: Without dead ends: 7486 [2021-02-22 02:31:07,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:31:07,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7486 states. [2021-02-22 02:31:08,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7486 to 3844. [2021-02-22 02:31:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3844 states. [2021-02-22 02:31:08,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 4752 transitions. [2021-02-22 02:31:08,036 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 4752 transitions. Word has length 465 [2021-02-22 02:31:08,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:31:08,037 INFO L480 AbstractCegarLoop]: Abstraction has 3844 states and 4752 transitions. [2021-02-22 02:31:08,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:31:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 4752 transitions. [2021-02-22 02:31:08,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-02-22 02:31:08,045 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:31:08,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:31:08,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:31:08,047 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:31:08,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:31:08,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1256398655, now seen corresponding path program 1 times [2021-02-22 02:31:08,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:31:08,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716290022] [2021-02-22 02:31:08,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:31:08,060 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:31:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:31:08,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:08,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:08,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:08,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:31:08,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:08,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:31:08,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:08,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:08,759 WARN L202 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2021-02-22 02:31:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:31:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:31:08,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:08,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:31:09,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716290022] [2021-02-22 02:31:09,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:31:09,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:31:09,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557091841] [2021-02-22 02:31:09,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:31:09,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:31:09,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:31:09,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:31:09,053 INFO L87 Difference]: Start difference. First operand 3844 states and 4752 transitions. Second operand 5 states. [2021-02-22 02:31:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:31:15,627 INFO L93 Difference]: Finished difference Result 10862 states and 13476 transitions. [2021-02-22 02:31:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 02:31:15,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 466 [2021-02-22 02:31:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:31:15,661 INFO L225 Difference]: With dead ends: 10862 [2021-02-22 02:31:15,661 INFO L226 Difference]: Without dead ends: 7250 [2021-02-22 02:31:15,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:31:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7250 states. [2021-02-22 02:31:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7250 to 7119. [2021-02-22 02:31:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7119 states. [2021-02-22 02:31:16,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7119 states to 7119 states and 8804 transitions. [2021-02-22 02:31:16,340 INFO L78 Accepts]: Start accepts. Automaton has 7119 states and 8804 transitions. Word has length 466 [2021-02-22 02:31:16,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:31:16,341 INFO L480 AbstractCegarLoop]: Abstraction has 7119 states and 8804 transitions. [2021-02-22 02:31:16,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:31:16,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7119 states and 8804 transitions. [2021-02-22 02:31:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2021-02-22 02:31:16,353 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:31:16,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:31:16,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 02:31:16,354 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:31:16,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:31:16,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1183658995, now seen corresponding path program 1 times [2021-02-22 02:31:16,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:31:16,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258003962] [2021-02-22 02:31:16,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:31:16,359 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:31:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:31:16,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:16,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:16,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:16,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:31:16,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:16,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:16,907 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2021-02-22 02:31:16,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:31:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:31:16,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:16,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:31:17,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258003962] [2021-02-22 02:31:17,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:31:17,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:31:17,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56685801] [2021-02-22 02:31:17,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:31:17,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:31:17,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:31:17,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:31:17,099 INFO L87 Difference]: Start difference. First operand 7119 states and 8804 transitions. Second operand 4 states. [2021-02-22 02:31:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:31:22,259 INFO L93 Difference]: Finished difference Result 20867 states and 25878 transitions. [2021-02-22 02:31:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:31:22,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 467 [2021-02-22 02:31:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:31:22,312 INFO L225 Difference]: With dead ends: 20867 [2021-02-22 02:31:22,312 INFO L226 Difference]: Without dead ends: 14000 [2021-02-22 02:31:22,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:31:22,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14000 states. [2021-02-22 02:31:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14000 to 7123. [2021-02-22 02:31:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7123 states. [2021-02-22 02:31:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7123 states to 7123 states and 8808 transitions. [2021-02-22 02:31:23,111 INFO L78 Accepts]: Start accepts. Automaton has 7123 states and 8808 transitions. Word has length 467 [2021-02-22 02:31:23,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:31:23,112 INFO L480 AbstractCegarLoop]: Abstraction has 7123 states and 8808 transitions. [2021-02-22 02:31:23,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:31:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 7123 states and 8808 transitions. [2021-02-22 02:31:23,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-02-22 02:31:23,125 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:31:23,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:31:23,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 02:31:23,126 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:31:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:31:23,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1547759905, now seen corresponding path program 1 times [2021-02-22 02:31:23,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:31:23,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410911493] [2021-02-22 02:31:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:31:23,131 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:31:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:31:23,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:23,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:23,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:23,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:31:23,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:23,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:31:23,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:23,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:23,765 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2021-02-22 02:31:23,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:31:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:31:23,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:23,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:31:24,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410911493] [2021-02-22 02:31:24,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:31:24,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:31:24,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438339472] [2021-02-22 02:31:24,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:31:24,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:31:24,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:31:24,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:31:24,031 INFO L87 Difference]: Start difference. First operand 7123 states and 8808 transitions. Second operand 5 states. [2021-02-22 02:31:30,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:31:30,864 INFO L93 Difference]: Finished difference Result 18966 states and 23467 transitions. [2021-02-22 02:31:30,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 02:31:30,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 468 [2021-02-22 02:31:30,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:31:30,894 INFO L225 Difference]: With dead ends: 18966 [2021-02-22 02:31:30,894 INFO L226 Difference]: Without dead ends: 12101 [2021-02-22 02:31:30,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:31:30,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12101 states. [2021-02-22 02:31:32,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12101 to 11970. [2021-02-22 02:31:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11970 states. [2021-02-22 02:31:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11970 states to 11970 states and 14729 transitions. [2021-02-22 02:31:32,092 INFO L78 Accepts]: Start accepts. Automaton has 11970 states and 14729 transitions. Word has length 468 [2021-02-22 02:31:32,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:31:32,092 INFO L480 AbstractCegarLoop]: Abstraction has 11970 states and 14729 transitions. [2021-02-22 02:31:32,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:31:32,092 INFO L276 IsEmpty]: Start isEmpty. Operand 11970 states and 14729 transitions. [2021-02-22 02:31:32,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-02-22 02:31:32,111 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:31:32,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:31:32,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 02:31:32,112 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:31:32,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:31:32,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1533744793, now seen corresponding path program 1 times [2021-02-22 02:31:32,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:31:32,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194976629] [2021-02-22 02:31:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:31:32,117 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:31:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:31:32,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:32,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:32,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:32,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:31:32,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:32,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:32,630 WARN L202 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2021-02-22 02:31:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:31:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:31:32,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:31:32,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:31:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:31:32,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194976629] [2021-02-22 02:31:32,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:31:32,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:31:32,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102424852] [2021-02-22 02:31:32,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:31:32,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:31:32,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:31:32,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:31:32,827 INFO L87 Difference]: Start difference. First operand 11970 states and 14729 transitions. Second operand 4 states. [2021-02-22 02:31:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:31:39,194 INFO L93 Difference]: Finished difference Result 34910 states and 43041 transitions. [2021-02-22 02:31:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:31:39,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 469 [2021-02-22 02:31:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:31:39,247 INFO L225 Difference]: With dead ends: 34910 [2021-02-22 02:31:39,247 INFO L226 Difference]: Without dead ends: 23606 [2021-02-22 02:31:39,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:31:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23606 states. [2021-02-22 02:31:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23606 to 11978. [2021-02-22 02:31:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11978 states. [2021-02-22 02:31:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11978 states to 11978 states and 14737 transitions. [2021-02-22 02:31:40,690 INFO L78 Accepts]: Start accepts. Automaton has 11978 states and 14737 transitions. Word has length 469 [2021-02-22 02:31:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:31:40,691 INFO L480 AbstractCegarLoop]: Abstraction has 11978 states and 14737 transitions. [2021-02-22 02:31:40,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:31:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 11978 states and 14737 transitions. [2021-02-22 02:31:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-02-22 02:31:40,711 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:31:40,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:31:40,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 02:31:40,712 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:31:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:31:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash -952059863, now seen corresponding path program 1 times [2021-02-22 02:31:40,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:31:40,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8460233] [2021-02-22 02:31:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:31:40,717 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:31:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:31:40,784 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:31:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:31:40,855 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:31:41,372 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:31:41,372 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:31:41,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 02:31:41,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:31:41 BoogieIcfgContainer [2021-02-22 02:31:41,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:31:41,430 INFO L168 Benchmark]: Toolchain (without parser) took 63610.99 ms. Allocated memory was 155.2 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 130.2 MB in the beginning and 749.6 MB in the end (delta: -619.4 MB). Peak memory consumption was 586.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:31:41,431 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:31:41,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1001.08 ms. Allocated memory is still 155.2 MB. Free memory was 128.9 MB in the beginning and 122.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:31:41,432 INFO L168 Benchmark]: Boogie Preprocessor took 181.09 ms. Allocated memory is still 155.2 MB. Free memory was 122.6 MB in the beginning and 117.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-22 02:31:41,433 INFO L168 Benchmark]: RCFGBuilder took 2522.74 ms. Allocated memory was 155.2 MB in the beginning and 194.0 MB in the end (delta: 38.8 MB). Free memory was 117.3 MB in the beginning and 100.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 95.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:31:41,434 INFO L168 Benchmark]: TraceAbstraction took 59875.57 ms. Allocated memory was 194.0 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 99.8 MB in the beginning and 749.6 MB in the end (delta: -649.8 MB). Peak memory consumption was 516.8 MB. Max. memory is 8.0 GB. [2021-02-22 02:31:41,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1001.08 ms. Allocated memory is still 155.2 MB. Free memory was 128.9 MB in the beginning and 122.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 181.09 ms. Allocated memory is still 155.2 MB. Free memory was 122.6 MB in the beginning and 117.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2522.74 ms. Allocated memory was 155.2 MB in the beginning and 194.0 MB in the end (delta: 38.8 MB). Free memory was 117.3 MB in the beginning and 100.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 95.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 59875.57 ms. Allocated memory was 194.0 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 99.8 MB in the beginning and 749.6 MB in the end (delta: -649.8 MB). Peak memory consumption was 516.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 894]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] _Bool newmax1 = 0; [L50] char id2 = '\x0'; [L51] unsigned char r2 = '\x0'; [L52] char st2 = '\x0'; [L53] char nl2 = '\x0'; [L54] char m2 = '\x0'; [L55] char max2 = '\x0'; [L56] _Bool mode2 = 0; [L57] _Bool newmax2 = 0; [L58] char id3 = '\x0'; [L59] unsigned char r3 = '\x0'; [L60] char st3 = '\x0'; [L61] char nl3 = '\x0'; [L62] char m3 = '\x0'; [L63] char max3 = '\x0'; [L64] _Bool mode3 = 0; [L65] _Bool newmax3 = 0; [L69] void (*nodes[3])() = { &node1, &node2, &node3 }; [L73] int __return_1873; [L74] int __return_2019; [L75] int __return_2152; [L76] int __return_2288; [L77] int __return_3084; [L78] int __return_3053; [L79] int __return_2989; [L80] int __return_2955; [L81] int __return_2551; [L82] int __return_2840; [L83] int __return_2806; [L84] int __return_2721; [L85] int __return_2426; [L88] int main__c1; [L89] int main__i2; [L90] main__c1 = 0 [L91] ep12 = __VERIFIER_nondet_bool() [L92] ep13 = __VERIFIER_nondet_bool() [L93] ep21 = __VERIFIER_nondet_bool() [L94] ep23 = __VERIFIER_nondet_bool() [L95] ep31 = __VERIFIER_nondet_bool() [L96] ep32 = __VERIFIER_nondet_bool() [L97] id1 = __VERIFIER_nondet_char() [L98] r1 = __VERIFIER_nondet_uchar() [L99] st1 = __VERIFIER_nondet_char() [L100] nl1 = __VERIFIER_nondet_char() [L101] m1 = __VERIFIER_nondet_char() [L102] max1 = __VERIFIER_nondet_char() [L103] mode1 = __VERIFIER_nondet_bool() [L104] newmax1 = __VERIFIER_nondet_bool() [L105] id2 = __VERIFIER_nondet_char() [L106] r2 = __VERIFIER_nondet_uchar() [L107] st2 = __VERIFIER_nondet_char() [L108] nl2 = __VERIFIER_nondet_char() [L109] m2 = __VERIFIER_nondet_char() [L110] max2 = __VERIFIER_nondet_char() [L111] mode2 = __VERIFIER_nondet_bool() [L112] newmax2 = __VERIFIER_nondet_bool() [L113] id3 = __VERIFIER_nondet_char() [L114] r3 = __VERIFIER_nondet_uchar() [L115] st3 = __VERIFIER_nondet_char() [L116] nl3 = __VERIFIER_nondet_char() [L117] m3 = __VERIFIER_nondet_char() [L118] max3 = __VERIFIER_nondet_char() [L119] mode3 = __VERIFIER_nondet_bool() [L120] newmax3 = __VERIFIER_nondet_bool() [L122] _Bool init__r121; [L123] _Bool init__r131; [L124] _Bool init__r211; [L125] _Bool init__r231; [L126] _Bool init__r311; [L127] _Bool init__r321; [L128] _Bool init__r122; [L129] int init__tmp; [L130] _Bool init__r132; [L131] int init__tmp___0; [L132] _Bool init__r212; [L133] int init__tmp___1; [L134] _Bool init__r232; [L135] int init__tmp___2; [L136] _Bool init__r312; [L137] int init__tmp___3; [L138] _Bool init__r322; [L139] int init__tmp___4; [L140] int init__tmp___5; [L141] init__r121 = ep12 [L142] init__r131 = ep13 [L143] init__r211 = ep21 [L144] init__r231 = ep23 [L145] init__r311 = ep31 [L146] init__r321 = ep32 [L147] COND FALSE !(!(init__r121 == 0)) [L3188] COND FALSE !(!(init__r131 == 0)) [L3204] init__tmp = 0 [L151] init__r122 = (_Bool)init__tmp [L152] COND FALSE !(!(init__r131 == 0)) [L3165] COND FALSE !(!(init__r121 == 0)) [L3181] init__tmp___0 = 0 [L156] init__r132 = (_Bool)init__tmp___0 [L157] COND FALSE !(!(init__r211 == 0)) [L3142] COND FALSE !(!(init__r231 == 0)) [L3158] init__tmp___1 = 0 [L161] init__r212 = (_Bool)init__tmp___1 [L162] COND FALSE !(!(init__r231 == 0)) [L3119] COND FALSE !(!(init__r211 == 0)) [L3135] init__tmp___2 = 0 [L166] init__r232 = (_Bool)init__tmp___2 [L167] COND FALSE !(!(init__r311 == 0)) [L3096] COND FALSE !(!(init__r321 == 0)) [L3112] init__tmp___3 = 0 [L171] init__r312 = (_Bool)init__tmp___3 [L172] COND FALSE !(!(init__r321 == 0)) [L3073] COND FALSE !(!(init__r311 == 0)) [L3089] init__tmp___4 = 0 [L176] init__r322 = (_Bool)init__tmp___4 [L177] COND TRUE ((int)id1) != ((int)id2) [L179] COND TRUE ((int)id1) != ((int)id3) [L181] COND TRUE ((int)id2) != ((int)id3) [L183] COND TRUE ((int)id1) >= 0 [L185] COND TRUE ((int)id2) >= 0 [L187] COND TRUE ((int)id3) >= 0 [L189] COND TRUE ((int)r1) == 0 [L191] COND TRUE ((int)r2) == 0 [L193] COND TRUE ((int)r3) == 0 [L195] COND TRUE ((int)max1) == ((int)id1) [L197] COND TRUE ((int)max2) == ((int)id2) [L199] COND TRUE ((int)max3) == ((int)id3) [L201] COND TRUE ((int)st1) == 0 [L203] COND TRUE ((int)st2) == 0 [L205] COND TRUE ((int)st3) == 0 [L207] COND TRUE ((int)nl1) == 0 [L209] COND TRUE ((int)nl2) == 0 [L211] COND TRUE ((int)nl3) == 0 [L213] COND TRUE ((int)mode1) == 0 [L215] COND TRUE ((int)mode2) == 0 [L217] COND TRUE ((int)mode3) == 0 [L219] COND TRUE !(newmax1 == 0) [L221] COND TRUE !(newmax2 == 0) [L223] COND TRUE !(newmax3 == 0) [L225] init__tmp___5 = 1 [L226] __return_1873 = init__tmp___5 [L227] main__i2 = __return_1873 [L228] COND TRUE main__i2 != 0 [L230] p12_old = nomsg [L231] p12_new = nomsg [L232] p13_old = nomsg [L233] p13_new = nomsg [L234] p21_old = nomsg [L235] p21_new = nomsg [L236] p23_old = nomsg [L237] p23_new = nomsg [L238] p31_old = nomsg [L239] p31_new = nomsg [L240] p32_old = nomsg [L241] p32_new = nomsg [L242] main__i2 = 0 [L244] _Bool node1__newmax; [L245] node1__newmax = 0 [L246] COND FALSE !(!(mode1 == 0)) [L252] COND TRUE ((int)r1) < 2 [L254] COND FALSE !(!(ep12 == 0)) [L267] COND FALSE !(!(ep13 == 0)) [L280] mode1 = 1 [L282] _Bool node2__newmax; [L283] node2__newmax = 0 [L284] COND FALSE !(!(mode2 == 0)) [L290] COND TRUE ((int)r2) < 2 [L292] COND FALSE !(!(ep21 == 0)) [L305] COND FALSE !(!(ep23 == 0)) [L318] mode2 = 1 [L320] _Bool node3__newmax; [L321] node3__newmax = 0 [L322] COND FALSE !(!(mode3 == 0)) [L328] COND TRUE ((int)r3) < 2 [L330] COND FALSE !(!(ep31 == 0)) [L343] COND FALSE !(!(ep32 == 0)) [L356] mode3 = 1 [L357] p12_old = p12_new [L358] p12_new = nomsg [L359] p13_old = p13_new [L360] p13_new = nomsg [L361] p21_old = p21_new [L362] p21_new = nomsg [L363] p23_old = p23_new [L364] p23_new = nomsg [L365] p31_old = p31_new [L366] p31_new = nomsg [L367] p32_old = p32_new [L368] p32_new = nomsg [L370] int check__tmp; [L371] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L373] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L375] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L377] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L379] COND FALSE !(((int)r1) >= 2) [L385] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L387] COND TRUE ((int)r1) < 2 [L389] COND FALSE !(((int)r1) >= 2) [L395] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L397] COND TRUE ((int)r1) < 2 [L399] check__tmp = 1 [L400] __return_2019 = check__tmp [L401] main__c1 = __return_2019 [L403] _Bool __tmp_1; [L404] __tmp_1 = main__c1 [L405] _Bool assert__arg; [L406] assert__arg = __tmp_1 [L407] COND FALSE !(assert__arg == 0) [L414] _Bool node1__newmax; [L415] node1__newmax = 0 [L416] COND TRUE !(mode1 == 0) [L418] COND FALSE !(r1 == 255) [L424] r1 = r1 + 1 [L425] COND FALSE !(!(ep21 == 0)) [L434] COND FALSE !(!(ep31 == 0)) [L443] newmax1 = node1__newmax [L444] COND FALSE !(((int)r1) == 2) [L450] mode1 = 0 [L452] _Bool node2__newmax; [L453] node2__newmax = 0 [L454] COND TRUE !(mode2 == 0) [L456] COND FALSE !(r2 == 255) [L462] r2 = r2 + 1 [L463] COND FALSE !(!(ep12 == 0)) [L472] COND FALSE !(!(ep32 == 0)) [L481] newmax2 = node2__newmax [L482] COND FALSE !(((int)r2) == 2) [L488] mode2 = 0 [L490] _Bool node3__newmax; [L491] node3__newmax = 0 [L492] COND TRUE !(mode3 == 0) [L494] COND FALSE !(r3 == 255) [L500] r3 = r3 + 1 [L501] COND FALSE !(!(ep13 == 0)) [L510] COND FALSE !(!(ep23 == 0)) [L519] newmax3 = node3__newmax [L520] COND FALSE !(((int)r3) == 2) [L526] mode3 = 0 [L527] p12_old = p12_new [L528] p12_new = nomsg [L529] p13_old = p13_new [L530] p13_new = nomsg [L531] p21_old = p21_new [L532] p21_new = nomsg [L533] p23_old = p23_new [L534] p23_new = nomsg [L535] p31_old = p31_new [L536] p31_new = nomsg [L537] p32_old = p32_new [L538] p32_new = nomsg [L540] int check__tmp; [L541] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L543] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L545] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L547] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L549] COND FALSE !(((int)r1) >= 2) [L555] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L557] COND TRUE ((int)r1) < 2 [L559] COND FALSE !(((int)r1) >= 2) [L565] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L567] COND TRUE ((int)r1) < 2 [L569] check__tmp = 1 [L570] __return_2152 = check__tmp [L571] main__c1 = __return_2152 [L573] _Bool __tmp_2; [L574] __tmp_2 = main__c1 [L575] _Bool assert__arg; [L576] assert__arg = __tmp_2 [L577] COND FALSE !(assert__arg == 0) [L584] _Bool node1__newmax; [L585] node1__newmax = 0 [L586] COND FALSE !(!(mode1 == 0)) [L592] COND TRUE ((int)r1) < 2 [L594] COND FALSE !(!(ep12 == 0)) [L607] COND FALSE !(!(ep13 == 0)) [L620] mode1 = 1 [L622] _Bool node2__newmax; [L623] node2__newmax = 0 [L624] COND FALSE !(!(mode2 == 0)) [L630] COND TRUE ((int)r2) < 2 [L632] COND FALSE !(!(ep21 == 0)) [L645] COND FALSE !(!(ep23 == 0)) [L658] mode2 = 1 [L660] _Bool node3__newmax; [L661] node3__newmax = 0 [L662] COND FALSE !(!(mode3 == 0)) [L668] COND TRUE ((int)r3) < 2 [L670] COND FALSE !(!(ep31 == 0)) [L683] COND FALSE !(!(ep32 == 0)) [L696] mode3 = 1 [L697] p12_old = p12_new [L698] p12_new = nomsg [L699] p13_old = p13_new [L700] p13_new = nomsg [L701] p21_old = p21_new [L702] p21_new = nomsg [L703] p23_old = p23_new [L704] p23_new = nomsg [L705] p31_old = p31_new [L706] p31_new = nomsg [L707] p32_old = p32_new [L708] p32_new = nomsg [L710] int check__tmp; [L711] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L713] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L715] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L717] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L719] COND FALSE !(((int)r1) >= 2) [L725] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L727] COND TRUE ((int)r1) < 2 [L729] COND FALSE !(((int)r1) >= 2) [L735] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L737] COND TRUE ((int)r1) < 2 [L739] check__tmp = 1 [L740] __return_2288 = check__tmp [L741] main__c1 = __return_2288 [L743] _Bool __tmp_3; [L744] __tmp_3 = main__c1 [L745] _Bool assert__arg; [L746] assert__arg = __tmp_3 [L747] COND FALSE !(assert__arg == 0) [L754] _Bool node1__newmax; [L755] node1__newmax = 0 [L756] COND TRUE !(mode1 == 0) [L758] COND FALSE !(r1 == 255) [L764] r1 = r1 + 1 [L765] COND FALSE !(!(ep21 == 0)) [L774] COND FALSE !(!(ep31 == 0)) [L783] newmax1 = node1__newmax [L784] COND TRUE ((int)r1) == 2 [L786] COND TRUE ((int)max1) == ((int)id1) [L788] st1 = 1 [L789] mode1 = 0 [L791] _Bool node2__newmax; [L792] node2__newmax = 0 [L793] COND TRUE !(mode2 == 0) [L795] COND FALSE !(r2 == 255) [L801] r2 = r2 + 1 [L802] COND FALSE !(!(ep12 == 0)) [L811] COND FALSE !(!(ep32 == 0)) [L820] newmax2 = node2__newmax [L821] COND TRUE ((int)r2) == 2 [L823] COND TRUE ((int)max2) == ((int)id2) [L825] st2 = 1 [L826] mode2 = 0 [L828] _Bool node3__newmax; [L829] node3__newmax = 0 [L830] COND TRUE !(mode3 == 0) [L832] COND FALSE !(r3 == 255) [L838] r3 = r3 + 1 [L839] COND FALSE !(!(ep13 == 0)) [L848] COND FALSE !(!(ep23 == 0)) [L857] newmax3 = node3__newmax [L858] COND TRUE ((int)r3) == 2 [L860] COND TRUE ((int)max3) == ((int)id3) [L862] st3 = 1 [L863] mode3 = 0 [L864] p12_old = p12_new [L865] p12_new = nomsg [L866] p13_old = p13_new [L867] p13_new = nomsg [L868] p21_old = p21_new [L869] p21_new = nomsg [L870] p23_old = p23_new [L871] p23_new = nomsg [L872] p31_old = p31_new [L873] p31_new = nomsg [L874] p32_old = p32_new [L875] p32_new = nomsg [L877] int check__tmp; [L878] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L884] check__tmp = 0 [L885] __return_3084 = check__tmp [L886] main__c1 = __return_3084 [L888] _Bool __tmp_4; [L889] __tmp_4 = main__c1 [L890] _Bool assert__arg; [L891] assert__arg = __tmp_4 [L892] COND TRUE assert__arg == 0 [L894] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 1249 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 59.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 45.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13289 SDtfs, 11592 SDslu, 9841 SDs, 0 SdLazy, 13693 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11978occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 22559 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...