/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:38:28,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:38:28,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:38:28,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:38:28,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:38:28,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:38:28,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:38:28,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:38:28,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:38:28,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:38:28,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:38:28,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:38:28,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:38:28,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:38:28,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:38:28,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:38:28,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:38:28,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:38:28,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:38:28,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:38:28,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:38:28,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:38:28,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:38:28,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:38:28,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 17:38:28,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 17:38:28,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 17:38:28,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 17:38:28,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 17:38:28,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 17:38:28,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 17:38:28,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 17:38:28,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 17:38:28,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 17:38:28,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 17:38:28,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 17:38:28,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 17:38:28,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 17:38:28,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:38:28,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:38:28,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:38:28,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:38:28,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:38:28,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:38:28,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:38:28,208 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:38:28,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:38:28,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:38:28,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:38:28,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:38:28,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:38:28,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:38:28,210 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:38:28,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:38:28,211 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:38:28,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:38:28,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:38:28,211 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:38:28,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:38:28,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:38:28,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:38:28,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:38:28,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:38:28,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:38:28,213 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:38:28,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:38:28,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:38:28,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:38:28,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:38:28,657 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:38:28,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2021-02-23 17:38:28,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2413e1b2f/bda7510348f84560ac127dc16a305aad/FLAG222a193e8 [2021-02-23 17:38:29,439 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:38:29,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2021-02-23 17:38:29,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2413e1b2f/bda7510348f84560ac127dc16a305aad/FLAG222a193e8 [2021-02-23 17:38:29,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2413e1b2f/bda7510348f84560ac127dc16a305aad [2021-02-23 17:38:29,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:38:29,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:38:29,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:29,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:38:29,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:38:29,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:29" (1/1) ... [2021-02-23 17:38:29,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b51189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:29, skipping insertion in model container [2021-02-23 17:38:29,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:29" (1/1) ... [2021-02-23 17:38:29,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:38:29,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:38:29,996 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-02-23 17:38:30,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:30,064 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:38:30,077 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-02-23 17:38:30,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:30,141 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:38:30,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:30 WrapperNode [2021-02-23 17:38:30,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:30,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:38:30,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:38:30,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:38:30,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:30" (1/1) ... [2021-02-23 17:38:30,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:30" (1/1) ... [2021-02-23 17:38:30,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:30" (1/1) ... [2021-02-23 17:38:30,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:30" (1/1) ... [2021-02-23 17:38:30,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:30" (1/1) ... [2021-02-23 17:38:30,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:30" (1/1) ... [2021-02-23 17:38:30,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:30" (1/1) ... [2021-02-23 17:38:30,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:38:30,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:38:30,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:38:30,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:38:30,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:38:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:38:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:38:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:38:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 17:38:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-02-23 17:38:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-02-23 17:38:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2021-02-23 17:38:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:38:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:38:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:38:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:38:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:38:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-23 17:38:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-23 17:38:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 17:38:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-02-23 17:38:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-02-23 17:38:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2021-02-23 17:38:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:38:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:38:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:38:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:38:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:38:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:38:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:38:30,883 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:38:30,883 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 17:38:30,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:30 BoogieIcfgContainer [2021-02-23 17:38:30,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:38:30,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:38:30,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:38:30,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:38:30,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:38:29" (1/3) ... [2021-02-23 17:38:30,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a0022c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:30, skipping insertion in model container [2021-02-23 17:38:30,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:30" (2/3) ... [2021-02-23 17:38:30,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a0022c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:30, skipping insertion in model container [2021-02-23 17:38:30,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:30" (3/3) ... [2021-02-23 17:38:30,895 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-02-23 17:38:30,906 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:38:30,912 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:38:30,936 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:38:30,972 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:38:30,972 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:38:30,973 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:38:30,973 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:38:30,973 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:38:30,973 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:38:30,973 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:38:30,974 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:38:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2021-02-23 17:38:31,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-23 17:38:31,027 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:31,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:31,029 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:31,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:31,039 INFO L82 PathProgramCache]: Analyzing trace with hash -535224117, now seen corresponding path program 1 times [2021-02-23 17:38:31,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:31,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219657246] [2021-02-23 17:38:31,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:31,141 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:31,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:31,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:31,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:31,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:31,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:31,508 WARN L141 QuantifierPusher]: treesize reduction 10, result has 79.2 percent of original size [2021-02-23 17:38:31,513 WARN L147 QuantifierPusher]: treesize reduction 10, result has 79.2 percent of original size 38 [2021-02-23 17:38:31,550 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-02-23 17:38:31,555 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-02-23 17:38:31,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:31,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 17:38:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:31,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:31,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-23 17:38:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:31,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-23 17:38:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:31,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:31,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:31,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:31,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-02-23 17:38:31,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219657246] [2021-02-23 17:38:31,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:31,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:38:31,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540845340] [2021-02-23 17:38:31,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:38:31,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:31,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:38:31,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:38:31,823 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2021-02-23 17:38:32,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:32,853 INFO L93 Difference]: Finished difference Result 268 states and 333 transitions. [2021-02-23 17:38:32,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:38:32,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2021-02-23 17:38:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:32,868 INFO L225 Difference]: With dead ends: 268 [2021-02-23 17:38:32,868 INFO L226 Difference]: Without dead ends: 158 [2021-02-23 17:38:32,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:38:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-02-23 17:38:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2021-02-23 17:38:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-02-23 17:38:32,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2021-02-23 17:38:32,950 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 89 [2021-02-23 17:38:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:32,951 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2021-02-23 17:38:32,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:38:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2021-02-23 17:38:32,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-02-23 17:38:32,956 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:32,956 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:32,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:38:32,957 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:32,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:32,958 INFO L82 PathProgramCache]: Analyzing trace with hash 2082711503, now seen corresponding path program 1 times [2021-02-23 17:38:32,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:32,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467323459] [2021-02-23 17:38:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:32,962 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:33,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:33,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:33,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:33,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:33,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:33,087 WARN L141 QuantifierPusher]: treesize reduction 11, result has 84.9 percent of original size [2021-02-23 17:38:33,091 WARN L147 QuantifierPusher]: treesize reduction 11, result has 84.9 percent of original size 62 [2021-02-23 17:38:33,137 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-02-23 17:38:33,139 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size 52 [2021-02-23 17:38:33,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:33,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:33,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:33,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:33,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 17:38:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:33,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:33,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-23 17:38:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:33,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:33,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:33,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:33,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-23 17:38:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:33,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:33,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-23 17:38:33,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467323459] [2021-02-23 17:38:33,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:33,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 17:38:33,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819013293] [2021-02-23 17:38:33,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 17:38:33,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:33,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 17:38:33,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:38:33,354 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand 10 states. [2021-02-23 17:38:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:34,393 INFO L93 Difference]: Finished difference Result 288 states and 332 transitions. [2021-02-23 17:38:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:38:34,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2021-02-23 17:38:34,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:34,398 INFO L225 Difference]: With dead ends: 288 [2021-02-23 17:38:34,398 INFO L226 Difference]: Without dead ends: 229 [2021-02-23 17:38:34,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-02-23 17:38:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-02-23 17:38:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 194. [2021-02-23 17:38:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2021-02-23 17:38:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 224 transitions. [2021-02-23 17:38:34,451 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 224 transitions. Word has length 93 [2021-02-23 17:38:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:34,452 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 224 transitions. [2021-02-23 17:38:34,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 17:38:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 224 transitions. [2021-02-23 17:38:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-23 17:38:34,455 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:34,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:34,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:38:34,456 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:34,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:34,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1979221695, now seen corresponding path program 1 times [2021-02-23 17:38:34,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:34,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106925390] [2021-02-23 17:38:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:34,460 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:34,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:34,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:34,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:34,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:34,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:34,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:34,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:34,613 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-02-23 17:38:34,615 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-02-23 17:38:34,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:34,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:34,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 17:38:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:34,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:34,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-23 17:38:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:34,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:34,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:34,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-23 17:38:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:34,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:34,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:34,726 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-23 17:38:34,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106925390] [2021-02-23 17:38:34,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:34,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 17:38:34,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142655917] [2021-02-23 17:38:34,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 17:38:34,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:34,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 17:38:34,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:38:34,730 INFO L87 Difference]: Start difference. First operand 194 states and 224 transitions. Second operand 11 states. [2021-02-23 17:38:35,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:35,830 INFO L93 Difference]: Finished difference Result 291 states and 333 transitions. [2021-02-23 17:38:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 17:38:35,831 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 96 [2021-02-23 17:38:35,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:35,834 INFO L225 Difference]: With dead ends: 291 [2021-02-23 17:38:35,834 INFO L226 Difference]: Without dead ends: 207 [2021-02-23 17:38:35,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-02-23 17:38:35,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-02-23 17:38:35,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 171. [2021-02-23 17:38:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2021-02-23 17:38:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 194 transitions. [2021-02-23 17:38:35,876 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 194 transitions. Word has length 96 [2021-02-23 17:38:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:35,876 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 194 transitions. [2021-02-23 17:38:35,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 17:38:35,877 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 194 transitions. [2021-02-23 17:38:35,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-02-23 17:38:35,879 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:35,879 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:35,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:38:35,879 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:35,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:35,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1035810605, now seen corresponding path program 2 times [2021-02-23 17:38:35,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:35,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807637886] [2021-02-23 17:38:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:35,883 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:35,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:35,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:35,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:35,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:35,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:35,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:35,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:35,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:38:35,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:35,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:38:36,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:38:36,025 WARN L141 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-02-23 17:38:36,026 WARN L147 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size 40 [2021-02-23 17:38:36,063 WARN L141 QuantifierPusher]: treesize reduction 16, result has 79.2 percent of original size [2021-02-23 17:38:36,067 WARN L147 QuantifierPusher]: treesize reduction 16, result has 79.2 percent of original size 61 [2021-02-23 17:38:36,115 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-02-23 17:38:36,116 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size 31 [2021-02-23 17:38:36,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:36,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:38:36,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:38:36,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:36,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:36,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:36,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 17:38:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:36,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-23 17:38:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:36,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:36,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:36,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:36,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-23 17:38:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:36,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:36,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:36,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:36,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-02-23 17:38:36,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807637886] [2021-02-23 17:38:36,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:36,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 17:38:36,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090316033] [2021-02-23 17:38:36,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 17:38:36,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:36,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 17:38:36,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:38:36,337 INFO L87 Difference]: Start difference. First operand 171 states and 194 transitions. Second operand 16 states. [2021-02-23 17:38:38,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:38,701 INFO L93 Difference]: Finished difference Result 314 states and 371 transitions. [2021-02-23 17:38:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 17:38:38,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2021-02-23 17:38:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:38,705 INFO L225 Difference]: With dead ends: 314 [2021-02-23 17:38:38,705 INFO L226 Difference]: Without dead ends: 255 [2021-02-23 17:38:38,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2021-02-23 17:38:38,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-02-23 17:38:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 225. [2021-02-23 17:38:38,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2021-02-23 17:38:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 261 transitions. [2021-02-23 17:38:38,757 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 261 transitions. Word has length 97 [2021-02-23 17:38:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:38,758 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 261 transitions. [2021-02-23 17:38:38,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 17:38:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 261 transitions. [2021-02-23 17:38:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-23 17:38:38,760 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:38,760 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:38,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:38:38,761 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:38,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:38,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1400683195, now seen corresponding path program 1 times [2021-02-23 17:38:38,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:38,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893290987] [2021-02-23 17:38:38,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:38,764 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:38:38,789 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:38:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:38:38,813 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:38:38,873 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:38:38,873 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:38:38,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:38:38,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:38:38 BoogieIcfgContainer [2021-02-23 17:38:38,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:38:38,906 INFO L168 Benchmark]: Toolchain (without parser) took 9135.06 ms. Allocated memory was 172.0 MB in the beginning and 298.8 MB in the end (delta: 126.9 MB). Free memory was 147.7 MB in the beginning and 153.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 121.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:38,906 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 172.0 MB. Free memory is still 143.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:38:38,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.90 ms. Allocated memory is still 172.0 MB. Free memory was 146.6 MB in the beginning and 134.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:38,913 INFO L168 Benchmark]: Boogie Preprocessor took 45.31 ms. Allocated memory is still 172.0 MB. Free memory was 134.4 MB in the beginning and 132.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:38,916 INFO L168 Benchmark]: RCFGBuilder took 697.17 ms. Allocated memory is still 172.0 MB. Free memory was 132.6 MB in the beginning and 133.1 MB in the end (delta: -459.3 kB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:38,918 INFO L168 Benchmark]: TraceAbstraction took 8016.71 ms. Allocated memory was 172.0 MB in the beginning and 298.8 MB in the end (delta: 126.9 MB). Free memory was 132.5 MB in the beginning and 153.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 106.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:38,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 172.0 MB. Free memory is still 143.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 350.90 ms. Allocated memory is still 172.0 MB. Free memory was 146.6 MB in the beginning and 134.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.31 ms. Allocated memory is still 172.0 MB. Free memory was 134.4 MB in the beginning and 132.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 697.17 ms. Allocated memory is still 172.0 MB. Free memory was 132.6 MB in the beginning and 133.1 MB in the end (delta: -459.3 kB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8016.71 ms. Allocated memory was 172.0 MB in the beginning and 298.8 MB in the end (delta: 126.9 MB). Free memory was 132.5 MB in the beginning and 153.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 106.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 105, overapproximation of bitwiseAnd at line 103. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L233] CALL, EXPR base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] RET, EXPR base2flt(0, 0) [L233] zero = base2flt(0, 0) [L234] CALL, EXPR base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] RET, EXPR base2flt(ma, ea) [L234] a = base2flt(ma, ea) [L235] CALL, EXPR base2flt(mb, eb) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] RET, EXPR base2flt(mb, eb) [L235] b = base2flt(mb, eb) [L236] CALL addflt(a, b) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L106] CALL __VERIFIER_assert(ea >= eb) [L8] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 181 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.9s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 610 SDtfs, 883 SDslu, 816 SDs, 0 SdLazy, 5201 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 113 StatesRemovedByMinimization, 4 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...