/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:41:40,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:41:40,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:41:40,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:41:40,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:41:40,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:41:40,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:41:40,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:41:40,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:41:40,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:41:40,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:41:40,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:41:40,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:41:40,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:41:40,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:41:40,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:41:40,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:41:40,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:41:40,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:41:40,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:41:40,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:41:40,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:41:40,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:41:40,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:41:40,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:41:40,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:41:40,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:41:40,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:41:40,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:41:40,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:41:40,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:41:40,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:41:40,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:41:40,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:41:40,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:41:40,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:41:40,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:41:40,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:41:40,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:41:40,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:41:40,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:41:40,334 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 10:41:40,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:41:40,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:41:40,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:41:40,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:41:40,367 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:41:40,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:41:40,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:41:40,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:41:40,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:41:40,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:41:40,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:41:40,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:41:40,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:41:40,369 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:41:40,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:41:40,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:41:40,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:41:40,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:41:40,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:41:40,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:41:40,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:41:40,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:41:40,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:41:40,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:41:40,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:41:40,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:41:40,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:41:40,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:41:40,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:41:40,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:41:40,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:41:40,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:41:40,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:41:40,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:41:40,840 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:41:40,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label12.c [2020-10-28 10:41:40,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe1b83d24/64fd3ebc1fd547b8885e436331c4b626/FLAGd0ba4df8f [2020-10-28 10:41:42,417 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:41:42,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label12.c [2020-10-28 10:41:42,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe1b83d24/64fd3ebc1fd547b8885e436331c4b626/FLAGd0ba4df8f [2020-10-28 10:41:42,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe1b83d24/64fd3ebc1fd547b8885e436331c4b626 [2020-10-28 10:41:42,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:41:42,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:41:42,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:41:42,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:41:42,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:41:42,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:41:42" (1/1) ... [2020-10-28 10:41:42,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799b3595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:42, skipping insertion in model container [2020-10-28 10:41:42,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:41:42" (1/1) ... [2020-10-28 10:41:42,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:41:42,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:41:45,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:41:45,056 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:41:46,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:41:46,365 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:41:46,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:46 WrapperNode [2020-10-28 10:41:46,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:41:46,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:41:46,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:41:46,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:41:46,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:46" (1/1) ... [2020-10-28 10:41:46,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:46" (1/1) ... [2020-10-28 10:41:46,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:46" (1/1) ... [2020-10-28 10:41:46,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:46" (1/1) ... [2020-10-28 10:41:46,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:46" (1/1) ... [2020-10-28 10:41:46,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:46" (1/1) ... [2020-10-28 10:41:46,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:46" (1/1) ... [2020-10-28 10:41:47,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:41:47,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:41:47,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:41:47,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:41:47,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-28 10:41:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:41:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:41:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:41:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:41:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:41:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:41:47,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:41:47,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:41:47,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:41:47,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:41:47,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:41:47,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:41:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:41:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:41:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:41:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:41:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:41:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:41:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:41:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:41:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:41:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:41:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:41:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:41:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:41:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:41:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:41:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:41:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:41:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:41:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:41:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:41:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:41:57,076 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:41:57,077 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:41:57,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:41:57 BoogieIcfgContainer [2020-10-28 10:41:57,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:41:57,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:41:57,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:41:57,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:41:57,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:41:42" (1/3) ... [2020-10-28 10:41:57,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb47ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:41:57, skipping insertion in model container [2020-10-28 10:41:57,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:41:46" (2/3) ... [2020-10-28 10:41:57,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb47ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:41:57, skipping insertion in model container [2020-10-28 10:41:57,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:41:57" (3/3) ... [2020-10-28 10:41:57,091 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label12.c [2020-10-28 10:41:57,104 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:41:57,111 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:41:57,125 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:41:57,164 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:41:57,164 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:41:57,164 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:41:57,164 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:41:57,164 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:41:57,164 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:41:57,165 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:41:57,165 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:41:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:41:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1696 [2020-10-28 10:41:57,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:41:57,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:41:57,380 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:41:57,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:41:57,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1220640753, now seen corresponding path program 1 times [2020-10-28 10:41:57,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:41:57,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014539370] [2020-10-28 10:41:57,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:41:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:41:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:03,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:42:03,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1719 [2020-10-28 10:42:03,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:42:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 10:42:03,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:42:03,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:42:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:42:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:42:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1710 [2020-10-28 10:42:03,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:42:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:42:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:42:05,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:05,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:42:05,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:42:05,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:42:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:42:05,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:42:05,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:42:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:42:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:42:05,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:42:05,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:42:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:42:08,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014539370] [2020-10-28 10:42:08,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:42:08,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:42:08,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492984788] [2020-10-28 10:42:08,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:42:08,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:42:08,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:42:08,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:42:09,000 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-28 10:42:44,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:42:44,231 INFO L93 Difference]: Finished difference Result 8129 states and 15417 transitions. [2020-10-28 10:42:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:42:44,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1695 [2020-10-28 10:42:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:42:44,317 INFO L225 Difference]: With dead ends: 8129 [2020-10-28 10:42:44,317 INFO L226 Difference]: Without dead ends: 5835 [2020-10-28 10:42:44,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:42:44,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2020-10-28 10:42:44,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5802. [2020-10-28 10:42:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5802 states. [2020-10-28 10:42:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 9375 transitions. [2020-10-28 10:42:44,671 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 9375 transitions. Word has length 1695 [2020-10-28 10:42:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:42:44,678 INFO L481 AbstractCegarLoop]: Abstraction has 5802 states and 9375 transitions. [2020-10-28 10:42:44,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:42:44,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 9375 transitions. [2020-10-28 10:42:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2020-10-28 10:42:44,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:42:44,804 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:42:44,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:42:44,807 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:42:44,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:42:44,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1179448715, now seen corresponding path program 1 times [2020-10-28 10:42:44,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:42:44,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642112822] [2020-10-28 10:42:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:42:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:42:44,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:50,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:42:50,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1730 [2020-10-28 10:42:50,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:42:50,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-28 10:42:50,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:42:50,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:42:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:42:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:42:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:42:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:42:51,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:42:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:42:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:51,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:42:51,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:42:51,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:42:51,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:42:51,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:42:51,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:42:51,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:42:51,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:42:51,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:42:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:42:51,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:42:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:42:51,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:51,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:42:51,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:42:51,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:42:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:42:51,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:42:51,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:42:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:42:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:42:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:42:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:42:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:42:52,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642112822] [2020-10-28 10:42:52,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:42:52,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:42:52,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689563173] [2020-10-28 10:42:52,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:42:52,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:42:52,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:42:52,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:42:52,491 INFO L87 Difference]: Start difference. First operand 5802 states and 9375 transitions. Second operand 7 states. [2020-10-28 10:43:20,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:43:20,520 INFO L93 Difference]: Finished difference Result 17382 states and 28470 transitions. [2020-10-28 10:43:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:43:20,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1704 [2020-10-28 10:43:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:43:20,599 INFO L225 Difference]: With dead ends: 17382 [2020-10-28 10:43:20,599 INFO L226 Difference]: Without dead ends: 11586 [2020-10-28 10:43:20,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:43:20,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2020-10-28 10:43:20,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11339. [2020-10-28 10:43:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11339 states. [2020-10-28 10:43:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11339 states to 11339 states and 16561 transitions. [2020-10-28 10:43:21,010 INFO L78 Accepts]: Start accepts. Automaton has 11339 states and 16561 transitions. Word has length 1704 [2020-10-28 10:43:21,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:43:21,011 INFO L481 AbstractCegarLoop]: Abstraction has 11339 states and 16561 transitions. [2020-10-28 10:43:21,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:43:21,012 INFO L276 IsEmpty]: Start isEmpty. Operand 11339 states and 16561 transitions. [2020-10-28 10:43:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1707 [2020-10-28 10:43:21,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:43:21,077 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:43:21,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:43:21,077 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:43:21,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:43:21,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1755853831, now seen corresponding path program 1 times [2020-10-28 10:43:21,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:43:21,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841800326] [2020-10-28 10:43:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:43:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:43:21,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:26,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:43:26,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1732 [2020-10-28 10:43:26,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:43:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 10:43:26,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:43:26,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:43:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:43:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:43:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:43:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:43:27,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:43:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:43:27,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:27,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:43:27,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:43:27,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:43:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:43:27,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:43:27,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:43:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:43:27,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:43:27,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:43:27,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:43:27,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:43:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:43:27,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:27,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:43:27,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:43:27,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:43:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:43:27,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:43:27,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:43:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:43:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:43:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:43:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:43:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:43:28,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841800326] [2020-10-28 10:43:28,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:43:28,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:43:28,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031195712] [2020-10-28 10:43:28,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:43:28,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:43:28,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:43:28,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:43:28,495 INFO L87 Difference]: Start difference. First operand 11339 states and 16561 transitions. Second operand 7 states. [2020-10-28 10:43:57,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:43:57,095 INFO L93 Difference]: Finished difference Result 29044 states and 42969 transitions. [2020-10-28 10:43:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:43:57,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1706 [2020-10-28 10:43:57,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:43:57,198 INFO L225 Difference]: With dead ends: 29044 [2020-10-28 10:43:57,202 INFO L226 Difference]: Without dead ends: 17711 [2020-10-28 10:43:57,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:43:57,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17711 states. [2020-10-28 10:43:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17711 to 17043. [2020-10-28 10:43:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17043 states. [2020-10-28 10:43:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17043 states to 17043 states and 23314 transitions. [2020-10-28 10:43:57,769 INFO L78 Accepts]: Start accepts. Automaton has 17043 states and 23314 transitions. Word has length 1706 [2020-10-28 10:43:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:43:57,770 INFO L481 AbstractCegarLoop]: Abstraction has 17043 states and 23314 transitions. [2020-10-28 10:43:57,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:43:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 17043 states and 23314 transitions. [2020-10-28 10:43:57,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2020-10-28 10:43:57,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:43:57,847 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:43:57,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:43:57,847 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:43:57,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:43:57,849 INFO L82 PathProgramCache]: Analyzing trace with hash -351318704, now seen corresponding path program 1 times [2020-10-28 10:43:57,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:43:57,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166229] [2020-10-28 10:43:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:43:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:43:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:59,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:03,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:44:03,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1743 [2020-10-28 10:44:03,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:44:03,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-28 10:44:03,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:44:03,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:44:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:44:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:44:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:44:03,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:44:03,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:44:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:44:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:03,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:44:03,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:44:03,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:44:03,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:44:03,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:44:03,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:44:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:44:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:44:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:44:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:44:04,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:44:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:44:04,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:04,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:44:04,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:44:04,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:44:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 10:44:04,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:44:04,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:44:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:44:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:44:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:44:04,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:44:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:44:05,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166229] [2020-10-28 10:44:05,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:44:05,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:44:05,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948979826] [2020-10-28 10:44:05,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:44:05,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:44:05,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:44:05,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:44:05,527 INFO L87 Difference]: Start difference. First operand 17043 states and 23314 transitions. Second operand 8 states. [2020-10-28 10:44:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:44:55,749 INFO L93 Difference]: Finished difference Result 61846 states and 87008 transitions. [2020-10-28 10:44:55,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 10:44:55,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1717 [2020-10-28 10:44:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:44:55,920 INFO L225 Difference]: With dead ends: 61846 [2020-10-28 10:44:55,920 INFO L226 Difference]: Without dead ends: 44809 [2020-10-28 10:44:55,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:44:56,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44809 states. [2020-10-28 10:44:57,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44809 to 44584. [2020-10-28 10:44:57,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44584 states. [2020-10-28 10:44:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44584 states to 44584 states and 59737 transitions. [2020-10-28 10:44:57,175 INFO L78 Accepts]: Start accepts. Automaton has 44584 states and 59737 transitions. Word has length 1717 [2020-10-28 10:44:57,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:44:57,176 INFO L481 AbstractCegarLoop]: Abstraction has 44584 states and 59737 transitions. [2020-10-28 10:44:57,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:44:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 44584 states and 59737 transitions. [2020-10-28 10:44:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1753 [2020-10-28 10:44:57,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:44:57,337 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:44:57,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:44:57,337 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:44:57,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:44:57,338 INFO L82 PathProgramCache]: Analyzing trace with hash 871162993, now seen corresponding path program 1 times [2020-10-28 10:44:57,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:44:57,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238050251] [2020-10-28 10:44:57,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:44:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:44:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:02,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:02,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1778 [2020-10-28 10:45:02,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:45:02,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 10:45:02,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:02,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:45:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:45:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 10:45:02,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:02,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:45:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:02,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:02,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:02,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:45:02,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:45:02,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:45:02,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:02,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:45:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:45:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:45:02,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:02,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:45:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:02,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:03,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:03,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 10:45:03,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:45:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 10:45:03,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:03,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:45:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:45:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 10:45:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:45:04,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238050251] [2020-10-28 10:45:04,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:45:04,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:45:04,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125810548] [2020-10-28 10:45:04,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:45:04,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:45:04,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:45:04,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:45:04,400 INFO L87 Difference]: Start difference. First operand 44584 states and 59737 transitions. Second operand 7 states.