/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/systemc/pc_sfifo_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:05:11,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:05:11,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:05:11,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:05:11,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:05:11,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:05:11,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:05:11,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:05:11,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:05:11,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:05:11,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:05:11,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:05:11,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:05:11,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:05:11,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:05:11,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:05:11,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:05:11,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:05:11,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:05:11,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:05:11,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:05:11,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:05:11,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:05:11,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:05:11,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 22:05:11,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:05:11,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:05:11,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:05:11,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:05:11,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:05:11,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:05:11,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:05:11,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:05:11,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:05:11,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:05:11,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:05:11,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:05:11,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:05:11,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:05:11,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:05:11,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:05:11,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:05:11,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:05:11,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:05:11,228 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:05:11,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:05:11,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:05:11,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:05:11,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:05:11,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:05:11,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:05:11,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:05:11,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:05:11,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:05:11,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:05:11,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:05:11,645 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:05:11,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-10-23 22:05:11,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d2ccbbd0/47b9de6a07cf4baea540b8a09f8a42b2/FLAGb6aeab92a [2020-10-23 22:05:12,355 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:05:12,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-10-23 22:05:12,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d2ccbbd0/47b9de6a07cf4baea540b8a09f8a42b2/FLAGb6aeab92a [2020-10-23 22:05:12,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d2ccbbd0/47b9de6a07cf4baea540b8a09f8a42b2 [2020-10-23 22:05:12,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:05:12,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:05:12,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:05:12,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:05:12,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:05:12,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:05:12" (1/1) ... [2020-10-23 22:05:12,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a54e9f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:12, skipping insertion in model container [2020-10-23 22:05:12,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:05:12" (1/1) ... [2020-10-23 22:05:12,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:05:12,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:05:12,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:05:12,975 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:05:13,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:05:13,093 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:05:13,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:13 WrapperNode [2020-10-23 22:05:13,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:05:13,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:05:13,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:05:13,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:05:13,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:13" (1/1) ... [2020-10-23 22:05:13,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:13" (1/1) ... [2020-10-23 22:05:13,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:13" (1/1) ... [2020-10-23 22:05:13,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:13" (1/1) ... [2020-10-23 22:05:13,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:13" (1/1) ... [2020-10-23 22:05:13,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:13" (1/1) ... [2020-10-23 22:05:13,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:13" (1/1) ... [2020-10-23 22:05:13,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:05:13,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:05:13,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:05:13,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:05:13,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:13" (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 [2020-10-23 22:05:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:05:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:05:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:05:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-23 22:05:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-10-23 22:05:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-10-23 22:05:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-10-23 22:05:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-10-23 22:05:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-10-23 22:05:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-10-23 22:05:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-10-23 22:05:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-23 22:05:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-10-23 22:05:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-23 22:05:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-10-23 22:05:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:05:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:05:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:05:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:05:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:05:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:05:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-23 22:05:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-10-23 22:05:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-10-23 22:05:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-10-23 22:05:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-10-23 22:05:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-10-23 22:05:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-10-23 22:05:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-10-23 22:05:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-23 22:05:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-10-23 22:05:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-23 22:05:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-10-23 22:05:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:05:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:05:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:05:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:05:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:05:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:05:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:05:13,784 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:05:13,785 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 22:05:13,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:05:13 BoogieIcfgContainer [2020-10-23 22:05:13,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:05:13,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:05:13,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:05:13,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:05:13,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:05:12" (1/3) ... [2020-10-23 22:05:13,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325e1aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:05:13, skipping insertion in model container [2020-10-23 22:05:13,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:13" (2/3) ... [2020-10-23 22:05:13,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325e1aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:05:13, skipping insertion in model container [2020-10-23 22:05:13,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:05:13" (3/3) ... [2020-10-23 22:05:13,796 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2020-10-23 22:05:13,808 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:05:13,814 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:05:13,827 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:05:13,850 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:05:13,850 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:05:13,850 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:05:13,851 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:05:13,851 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:05:13,851 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:05:13,851 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:05:13,851 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:05:13,872 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2020-10-23 22:05:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-23 22:05:13,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:13,891 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] [2020-10-23 22:05:13,891 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:13,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:13,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1653709341, now seen corresponding path program 1 times [2020-10-23 22:05:13,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:13,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228438982] [2020-10-23 22:05:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:13,982 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:05:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:14,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:05:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:14,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 22:05:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 22:05:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:14,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:05:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:14,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 22:05:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:14,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:05:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:14,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:05:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:05:14,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228438982] [2020-10-23 22:05:14,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:05:14,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:05:14,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035696805] [2020-10-23 22:05:14,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:05:14,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:05:14,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:05:14,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:05:14,681 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 7 states. [2020-10-23 22:05:16,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:05:16,024 INFO L93 Difference]: Finished difference Result 414 states and 529 transitions. [2020-10-23 22:05:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 22:05:16,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-23 22:05:16,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:05:16,041 INFO L225 Difference]: With dead ends: 414 [2020-10-23 22:05:16,041 INFO L226 Difference]: Without dead ends: 260 [2020-10-23 22:05:16,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:05:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-23 22:05:16,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 180. [2020-10-23 22:05:16,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-23 22:05:16,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2020-10-23 22:05:16,162 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 118 [2020-10-23 22:05:16,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:05:16,163 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2020-10-23 22:05:16,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:05:16,163 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2020-10-23 22:05:16,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-23 22:05:16,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:16,167 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] [2020-10-23 22:05:16,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:05:16,168 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:16,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:16,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1229597251, now seen corresponding path program 1 times [2020-10-23 22:05:16,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:16,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657443525] [2020-10-23 22:05:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:16,173 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:05:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:05:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 22:05:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 22:05:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:05:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 22:05:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:16,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:05:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:05:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:05:16,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657443525] [2020-10-23 22:05:16,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:05:16,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 22:05:16,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706368318] [2020-10-23 22:05:16,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 22:05:16,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:05:16,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 22:05:16,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 22:05:16,487 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand 6 states. [2020-10-23 22:05:18,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:05:18,016 INFO L93 Difference]: Finished difference Result 552 states and 684 transitions. [2020-10-23 22:05:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 22:05:18,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-23 22:05:18,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:05:18,025 INFO L225 Difference]: With dead ends: 552 [2020-10-23 22:05:18,025 INFO L226 Difference]: Without dead ends: 424 [2020-10-23 22:05:18,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 22:05:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-23 22:05:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 312. [2020-10-23 22:05:18,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-23 22:05:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 371 transitions. [2020-10-23 22:05:18,150 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 371 transitions. Word has length 118 [2020-10-23 22:05:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:05:18,151 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 371 transitions. [2020-10-23 22:05:18,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 22:05:18,151 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 371 transitions. [2020-10-23 22:05:18,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-23 22:05:18,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:18,155 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] [2020-10-23 22:05:18,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:05:18,155 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:18,156 INFO L82 PathProgramCache]: Analyzing trace with hash 187202374, now seen corresponding path program 1 times [2020-10-23 22:05:18,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:18,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374197689] [2020-10-23 22:05:18,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:18,159 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:05:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:18,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:05:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:18,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 22:05:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:18,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 22:05:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:18,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:05:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:18,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-23 22:05:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:05:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:18,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:05:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:05:18,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374197689] [2020-10-23 22:05:18,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:05:18,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:05:18,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075114404] [2020-10-23 22:05:18,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:05:18,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:05:18,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:05:18,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:05:18,359 INFO L87 Difference]: Start difference. First operand 312 states and 371 transitions. Second operand 7 states. [2020-10-23 22:05:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:05:19,338 INFO L93 Difference]: Finished difference Result 671 states and 825 transitions. [2020-10-23 22:05:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 22:05:19,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-23 22:05:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:05:19,343 INFO L225 Difference]: With dead ends: 671 [2020-10-23 22:05:19,344 INFO L226 Difference]: Without dead ends: 410 [2020-10-23 22:05:19,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:05:19,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-23 22:05:19,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 307. [2020-10-23 22:05:19,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-23 22:05:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 365 transitions. [2020-10-23 22:05:19,425 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 365 transitions. Word has length 119 [2020-10-23 22:05:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:05:19,426 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 365 transitions. [2020-10-23 22:05:19,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:05:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 365 transitions. [2020-10-23 22:05:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-23 22:05:19,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:19,429 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] [2020-10-23 22:05:19,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:05:19,429 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:19,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:19,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1232558564, now seen corresponding path program 1 times [2020-10-23 22:05:19,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:19,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506051925] [2020-10-23 22:05:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:19,432 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:05:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:19,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:05:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:19,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 22:05:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:19,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 22:05:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:19,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:05:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:19,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-23 22:05:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:19,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-23 22:05:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:19,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:05:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:19,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:05:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:05:19,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506051925] [2020-10-23 22:05:19,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:05:19,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 22:05:19,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927765458] [2020-10-23 22:05:19,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 22:05:19,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:05:19,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 22:05:19,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:05:19,832 INFO L87 Difference]: Start difference. First operand 307 states and 365 transitions. Second operand 14 states. [2020-10-23 22:05:24,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:05:24,313 INFO L93 Difference]: Finished difference Result 1391 states and 1863 transitions. [2020-10-23 22:05:24,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-23 22:05:24,313 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 131 [2020-10-23 22:05:24,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:05:24,329 INFO L225 Difference]: With dead ends: 1391 [2020-10-23 22:05:24,330 INFO L226 Difference]: Without dead ends: 1135 [2020-10-23 22:05:24,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=579, Invalid=2727, Unknown=0, NotChecked=0, Total=3306 [2020-10-23 22:05:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2020-10-23 22:05:24,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 754. [2020-10-23 22:05:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2020-10-23 22:05:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 950 transitions. [2020-10-23 22:05:24,589 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 950 transitions. Word has length 131 [2020-10-23 22:05:24,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:05:24,590 INFO L481 AbstractCegarLoop]: Abstraction has 754 states and 950 transitions. [2020-10-23 22:05:24,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 22:05:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 950 transitions. [2020-10-23 22:05:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-23 22:05:24,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:24,596 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] [2020-10-23 22:05:24,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:05:24,597 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:24,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:24,598 INFO L82 PathProgramCache]: Analyzing trace with hash 822927411, now seen corresponding path program 1 times [2020-10-23 22:05:24,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:24,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826363122] [2020-10-23 22:05:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:24,604 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:05:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:24,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:05:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 22:05:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:24,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 22:05:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:24,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:05:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-23 22:05:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:24,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:05:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:24,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:05:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:05:24,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826363122] [2020-10-23 22:05:24,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:05:24,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 22:05:24,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566750699] [2020-10-23 22:05:24,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 22:05:24,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:05:24,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 22:05:24,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 22:05:24,804 INFO L87 Difference]: Start difference. First operand 754 states and 950 transitions. Second operand 6 states. [2020-10-23 22:05:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:05:26,293 INFO L93 Difference]: Finished difference Result 2127 states and 2789 transitions. [2020-10-23 22:05:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 22:05:26,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-23 22:05:26,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:05:26,305 INFO L225 Difference]: With dead ends: 2127 [2020-10-23 22:05:26,305 INFO L226 Difference]: Without dead ends: 1424 [2020-10-23 22:05:26,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 22:05:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-23 22:05:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1181. [2020-10-23 22:05:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-10-23 22:05:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1491 transitions. [2020-10-23 22:05:26,628 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1491 transitions. Word has length 122 [2020-10-23 22:05:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:05:26,628 INFO L481 AbstractCegarLoop]: Abstraction has 1181 states and 1491 transitions. [2020-10-23 22:05:26,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 22:05:26,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1491 transitions. [2020-10-23 22:05:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-23 22:05:26,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:26,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:05:26,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:05:26,632 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:26,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1556859295, now seen corresponding path program 1 times [2020-10-23 22:05:26,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:26,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358412188] [2020-10-23 22:05:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:26,765 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-23 22:05:27,731 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-23 22:05:28,008 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-23 22:05:28,202 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:05:28,204 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:05:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:28,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:05:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:28,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 22:05:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:28,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 22:05:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:28,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:05:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:28,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-23 22:05:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:28,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 22:05:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:28,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-23 22:05:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:28,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:05:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:28,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:05:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:05:28,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358412188] [2020-10-23 22:05:28,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:05:28,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:05:28,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709587258] [2020-10-23 22:05:28,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:05:28,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:05:28,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:05:28,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:05:28,459 INFO L87 Difference]: Start difference. First operand 1181 states and 1491 transitions. Second operand 7 states. [2020-10-23 22:05:30,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:05:30,076 INFO L93 Difference]: Finished difference Result 2367 states and 3085 transitions. [2020-10-23 22:05:30,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 22:05:30,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-10-23 22:05:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:05:30,090 INFO L225 Difference]: With dead ends: 2367 [2020-10-23 22:05:30,090 INFO L226 Difference]: Without dead ends: 1563 [2020-10-23 22:05:30,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:05:30,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2020-10-23 22:05:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1383. [2020-10-23 22:05:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2020-10-23 22:05:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1761 transitions. [2020-10-23 22:05:30,501 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1761 transitions. Word has length 155 [2020-10-23 22:05:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:05:30,502 INFO L481 AbstractCegarLoop]: Abstraction has 1383 states and 1761 transitions. [2020-10-23 22:05:30,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:05:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1761 transitions. [2020-10-23 22:05:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 22:05:30,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:30,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:05:30,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 22:05:30,507 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:30,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:30,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1983673258, now seen corresponding path program 1 times [2020-10-23 22:05:30,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:30,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069864932] [2020-10-23 22:05:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:30,514 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:05:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:05:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-23 22:05:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 22:05:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:05:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-23 22:05:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:05:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:05:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:05:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 22:05:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:05:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:05:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:05:30,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069864932] [2020-10-23 22:05:30,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:05:30,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 22:05:30,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523121961] [2020-10-23 22:05:30,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 22:05:30,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:05:30,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 22:05:30,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:05:30,778 INFO L87 Difference]: Start difference. First operand 1383 states and 1761 transitions. Second operand 9 states. [2020-10-23 22:05:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:05:32,589 INFO L93 Difference]: Finished difference Result 2563 states and 3377 transitions. [2020-10-23 22:05:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 22:05:32,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-10-23 22:05:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:05:32,599 INFO L225 Difference]: With dead ends: 2563 [2020-10-23 22:05:32,599 INFO L226 Difference]: Without dead ends: 1268 [2020-10-23 22:05:32,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-10-23 22:05:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-10-23 22:05:32,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1083. [2020-10-23 22:05:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-10-23 22:05:32,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1311 transitions. [2020-10-23 22:05:32,922 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1311 transitions. Word has length 167 [2020-10-23 22:05:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:05:32,923 INFO L481 AbstractCegarLoop]: Abstraction has 1083 states and 1311 transitions. [2020-10-23 22:05:32,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 22:05:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1311 transitions. [2020-10-23 22:05:32,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-23 22:05:32,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:32,927 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:05:32,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 22:05:32,927 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:32,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1106234135, now seen corresponding path program 1 times [2020-10-23 22:05:32,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:32,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810199450] [2020-10-23 22:05:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:35,746 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 22:05:35,767 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:38,242 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 22:05:38,255 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:39,139 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 22:05:39,144 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:40,047 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 22:05:40,759 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 22:05:43,187 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 22:05:43,191 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:43,944 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 22:05:43,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:46,306 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-23 22:05:46,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:46,313 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:05:48,648 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2020-10-23 22:05:48,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:51,001 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2020-10-23 22:05:51,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:51,742 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2020-10-23 22:05:54,115 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2020-10-23 22:05:54,119 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:54,952 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2020-10-23 22:05:54,955 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:57,280 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2020-10-23 22:05:58,181 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2020-10-23 22:05:58,185 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:59,158 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2020-10-23 22:05:59,162 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 22:05:59,165 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:05:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 22:05:59,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 22:05:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 22:05:59,535 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 22:05:59,614 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 22:05:59,614 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 22:05:59,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 22:05:59,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:05:59 BoogieIcfgContainer [2020-10-23 22:05:59,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:05:59,643 INFO L168 Benchmark]: Toolchain (without parser) took 46966.36 ms. Allocated memory was 152.0 MB in the beginning and 556.8 MB in the end (delta: 404.8 MB). Free memory was 127.9 MB in the beginning and 489.5 MB in the end (delta: -361.5 MB). Peak memory consumption was 44.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:05:59,643 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:05:59,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.72 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 115.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-23 22:05:59,645 INFO L168 Benchmark]: Boogie Preprocessor took 49.19 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 113.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:05:59,645 INFO L168 Benchmark]: RCFGBuilder took 642.04 ms. Allocated memory is still 152.0 MB. Free memory was 113.7 MB in the beginning and 124.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:05:59,646 INFO L168 Benchmark]: TraceAbstraction took 45852.31 ms. Allocated memory was 152.0 MB in the beginning and 556.8 MB in the end (delta: 404.8 MB). Free memory was 123.5 MB in the beginning and 489.5 MB in the end (delta: -366.0 MB). Peak memory consumption was 39.3 MB. Max. memory is 8.0 GB. [2020-10-23 22:05:59,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 408.72 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 115.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.19 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 113.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 642.04 ms. Allocated memory is still 152.0 MB. Free memory was 113.7 MB in the beginning and 124.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 45852.31 ms. Allocated memory was 152.0 MB in the beginning and 556.8 MB in the end (delta: 404.8 MB). Free memory was 123.5 MB in the beginning and 489.5 MB in the end (delta: -366.0 MB). Peak memory consumption was 39.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] int q_buf_0 ; [L17] int q_free ; [L18] int q_read_ev ; [L19] int q_write_ev ; [L20] int p_num_write ; [L21] int p_last_write ; [L22] int p_dw_st ; [L23] int p_dw_pc ; [L24] int p_dw_i ; [L25] int c_num_read ; [L26] int c_last_read ; [L27] int c_dr_st ; [L28] int c_dr_pc ; [L29] int c_dr_i ; [L136] static int a_t ; [L352] int __retres1 ; [L356] CALL init_model() [L338] q_free = 1 [L339] q_write_ev = 2 [L340] q_read_ev = q_write_ev [L341] p_num_write = 0 [L342] p_dw_pc = 0 [L343] p_dw_i = 1 [L344] c_num_read = 0 [L345] c_dr_pc = 0 [L346] c_dr_i = 1 [L356] RET init_model() [L357] CALL start_simulation() [L306] int kernel_st ; [L307] int tmp ; [L311] kernel_st = 0 [L312] CALL init_threads() [L198] COND TRUE (int )p_dw_i == 1 [L199] p_dw_st = 0 [L203] COND TRUE (int )c_dr_i == 1 [L204] c_dr_st = 0 [L312] RET init_threads() [L315] COND TRUE 1 [L318] kernel_st = 1 [L319] CALL eval() [L233] int tmp ; [L234] int tmp___0 ; [L235] int tmp___1 ; [L239] COND TRUE 1 [L242] CALL, EXPR exists_runnable_thread() [L213] int __retres1 ; [L216] COND TRUE (int )p_dw_st == 0 [L217] __retres1 = 1 [L229] return (__retres1); [L242] RET, EXPR exists_runnable_thread() [L242] tmp___1 = exists_runnable_thread() [L244] COND TRUE \read(tmp___1) [L249] COND TRUE (int )p_dw_st == 0 [L251] tmp = __VERIFIER_nondet_int() [L253] COND TRUE \read(tmp) [L255] p_dw_st = 1 [L256] CALL do_write_p() [L98] COND TRUE (int )p_dw_pc == 0 [L109] COND TRUE 1 [L111] COND FALSE !((int )q_free == 0) [L121] q_buf_0 = __VERIFIER_nondet_int() [L122] p_last_write = q_buf_0 [L123] p_num_write += 1 [L124] q_free = 0 [L125] q_write_ev = 1 [L126] CALL immediate_notify_threads() [L69] int tmp ; [L70] int tmp___0 ; [L74] CALL, EXPR is_do_write_p_triggered() [L31] int __retres1 ; [L34] COND FALSE !((int )p_dw_pc == 1) [L44] __retres1 = 0 [L46] return (__retres1); [L74] RET, EXPR is_do_write_p_triggered() [L74] tmp = is_do_write_p_triggered() [L76] COND FALSE !(\read(tmp)) [L82] CALL, EXPR is_do_read_c_triggered() [L50] int __retres1 ; [L53] COND FALSE !((int )c_dr_pc == 1) [L63] __retres1 = 0 [L65] return (__retres1); [L82] RET, EXPR is_do_read_c_triggered() [L82] tmp___0 = is_do_read_c_triggered() [L84] COND FALSE !(\read(tmp___0)) [L126] RET immediate_notify_threads() [L127] q_write_ev = 2 [L109] COND TRUE 1 [L111] COND TRUE (int )q_free == 0 [L112] p_dw_st = 2 [L113] p_dw_pc = 1 [L256] RET do_write_p() [L264] COND TRUE (int )c_dr_st == 0 [L266] tmp___0 = __VERIFIER_nondet_int() [L268] COND TRUE \read(tmp___0) [L270] c_dr_st = 1 [L271] CALL do_read_c() [L138] int a ; [L141] COND TRUE (int )c_dr_pc == 0 [L152] COND TRUE 1 [L154] COND FALSE !((int )q_free == 1) [L166] a = q_buf_0 [L167] c_last_read = a [L168] c_num_read += 1 [L169] q_free = 1 [L170] q_read_ev = 1 [L171] CALL immediate_notify_threads() [L69] int tmp ; [L70] int tmp___0 ; [L74] CALL, EXPR is_do_write_p_triggered() [L31] int __retres1 ; [L34] COND TRUE (int )p_dw_pc == 1 [L35] COND FALSE !((int )q_read_ev == 1) [L44] __retres1 = 0 [L46] return (__retres1); [L74] RET, EXPR is_do_write_p_triggered() [L74] tmp = is_do_write_p_triggered() [L76] COND FALSE !(\read(tmp)) [L82] CALL, EXPR is_do_read_c_triggered() [L50] int __retres1 ; [L53] COND FALSE !((int )c_dr_pc == 1) [L63] __retres1 = 0 [L65] return (__retres1); [L82] RET, EXPR is_do_read_c_triggered() [L82] tmp___0 = is_do_read_c_triggered() [L84] COND FALSE !(\read(tmp___0)) [L171] RET immediate_notify_threads() [L172] q_read_ev = 2 [L174] COND FALSE !(p_last_write == c_last_read) [L184] CALL error() [L11] CALL reach_error() [L3] __assert_fail("0", "pc_sfifo_1.cil-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 194 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.7s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1677 SDtfs, 4033 SDslu, 2149 SDs, 0 SdLazy, 5959 SolverSat, 922 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 274 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1383occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 1284 StatesRemovedByMinimization, 7 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...