/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/Problem13_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:37:35,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:37:35,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:37:35,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:37:35,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:37:35,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:37:35,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:37:35,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:37:35,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:37:35,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:37:35,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:37:35,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:37:35,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:37:35,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:37:35,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:37:35,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:37:35,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:37:35,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:37:35,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:37:35,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:37:35,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:37:35,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:37:35,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:37:35,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:37:35,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:37:35,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:37:35,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:37:35,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:37:35,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:37:35,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:37:35,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:37:35,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:37:35,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:37:35,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:37:35,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:37:35,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:37:35,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:37:35,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:37:35,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:37:35,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:37:35,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:37:35,402 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 12:37:35,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:37:35,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:37:35,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:37:35,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:37:35,480 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:37:35,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:37:35,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:37:35,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:37:35,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:37:35,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:37:35,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:37:35,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:37:35,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:37:35,483 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:37:35,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:37:35,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:37:35,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:37:35,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:37:35,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:37:35,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:37:35,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:37:35,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:37:35,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:37:35,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:37:35,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:37:35,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:37:35,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:37:35,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:37:35,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:37:35,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:37:35,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:37:35,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:37:35,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:37:35,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:37:35,998 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:37:35,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label34.c [2020-10-28 12:37:36,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbb737ab0/d06507a2ae5d4581bec0304bf435222c/FLAGa6c72cf0b [2020-10-28 12:37:37,269 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:37:37,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label34.c [2020-10-28 12:37:37,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbb737ab0/d06507a2ae5d4581bec0304bf435222c/FLAGa6c72cf0b [2020-10-28 12:37:37,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbb737ab0/d06507a2ae5d4581bec0304bf435222c [2020-10-28 12:37:37,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:37:37,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:37:37,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:37:37,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:37:37,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:37:37,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:37:37" (1/1) ... [2020-10-28 12:37:37,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a9638e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:37, skipping insertion in model container [2020-10-28 12:37:37,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:37:37" (1/1) ... [2020-10-28 12:37:37,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:37:37,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:37:39,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:37:39,578 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:37:40,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:37:40,495 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:37:40,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:40 WrapperNode [2020-10-28 12:37:40,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:37:40,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:37:40,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:37:40,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:37:40,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:40" (1/1) ... [2020-10-28 12:37:40,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:40" (1/1) ... [2020-10-28 12:37:40,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:40" (1/1) ... [2020-10-28 12:37:40,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:40" (1/1) ... [2020-10-28 12:37:40,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:40" (1/1) ... [2020-10-28 12:37:40,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:40" (1/1) ... [2020-10-28 12:37:40,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:40" (1/1) ... [2020-10-28 12:37:41,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:37:41,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:37:41,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:37:41,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:37:41,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:40" (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 12:37:41,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:37:41,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:37:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:37:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:37:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:37:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:37:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:37:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:37:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:37:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:37:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:37:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:37:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:37:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:37:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:37:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:37:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:37:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:37:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:37:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:37:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:37:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:37:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:37:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:37:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:37:52,376 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:37:52,377 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:37:52,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:37:52 BoogieIcfgContainer [2020-10-28 12:37:52,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:37:52,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:37:52,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:37:52,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:37:52,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:37:37" (1/3) ... [2020-10-28 12:37:52,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2b77b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:37:52, skipping insertion in model container [2020-10-28 12:37:52,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:40" (2/3) ... [2020-10-28 12:37:52,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2b77b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:37:52, skipping insertion in model container [2020-10-28 12:37:52,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:37:52" (3/3) ... [2020-10-28 12:37:52,395 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label34.c [2020-10-28 12:37:52,412 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:37:52,421 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:37:52,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:37:52,485 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:37:52,486 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:37:52,486 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:37:52,486 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:37:52,486 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:37:52,486 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:37:52,486 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:37:52,487 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:37:52,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:37:52,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 12:37:52,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:37:52,547 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] [2020-10-28 12:37:52,548 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:37:52,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:37:52,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1061433682, now seen corresponding path program 1 times [2020-10-28 12:37:52,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:37:52,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28989722] [2020-10-28 12:37:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:37:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:53,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:53,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:53,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:37:53,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-28 12:37:53,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:53,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:37:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:37:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 12:37:53,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:37:53,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:37:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:53,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:53,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:37:53,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:53,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:37:53,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:53,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:53,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:37:53,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:53,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:37:53,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:37:53,782 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 12:37:53,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28989722] [2020-10-28 12:37:53,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:37:53,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:37:53,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581022336] [2020-10-28 12:37:53,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:37:53,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:37:53,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:37:53,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:37:53,816 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:38:11,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:38:11,761 INFO L93 Difference]: Finished difference Result 3209 states and 5919 transitions. [2020-10-28 12:38:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:38:11,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-28 12:38:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:38:11,809 INFO L225 Difference]: With dead ends: 3209 [2020-10-28 12:38:11,810 INFO L226 Difference]: Without dead ends: 2007 [2020-10-28 12:38:11,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:38:11,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2020-10-28 12:38:12,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1921. [2020-10-28 12:38:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2020-10-28 12:38:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3312 transitions. [2020-10-28 12:38:12,019 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3312 transitions. Word has length 63 [2020-10-28 12:38:12,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:38:12,020 INFO L481 AbstractCegarLoop]: Abstraction has 1921 states and 3312 transitions. [2020-10-28 12:38:12,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:38:12,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3312 transitions. [2020-10-28 12:38:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 12:38:12,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:38:12,028 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, 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] [2020-10-28 12:38:12,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:38:12,029 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:38:12,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:38:12,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1429707475, now seen corresponding path program 1 times [2020-10-28 12:38:12,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:38:12,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817724224] [2020-10-28 12:38:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:38:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:12,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:13,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:14,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:14,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:38:14,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:38:14,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2352 [2020-10-28 12:38:14,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:14,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:38:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:38:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:38:14,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:38:14,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:38:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:14,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:14,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:14,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:38:14,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:14,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:38:14,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:14,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:14,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:38:14,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:38:14,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:38:14,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 12:38:14,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:38:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:14,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:14,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:38:14,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 12:38:14,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:14,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:38:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:38:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:38:14,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:38:15,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817724224] [2020-10-28 12:38:15,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:38:15,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:38:15,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45736386] [2020-10-28 12:38:15,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:38:15,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:38:15,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:38:15,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:38:15,070 INFO L87 Difference]: Start difference. First operand 1921 states and 3312 transitions. Second operand 8 states. [2020-10-28 12:38:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:38:41,815 INFO L93 Difference]: Finished difference Result 7342 states and 12869 transitions. [2020-10-28 12:38:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:38:41,817 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-10-28 12:38:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:38:41,857 INFO L225 Difference]: With dead ends: 7342 [2020-10-28 12:38:41,857 INFO L226 Difference]: Without dead ends: 5427 [2020-10-28 12:38:41,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:38:41,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5427 states. [2020-10-28 12:38:42,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5427 to 5378. [2020-10-28 12:38:42,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5378 states. [2020-10-28 12:38:42,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 8227 transitions. [2020-10-28 12:38:42,083 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 8227 transitions. Word has length 132 [2020-10-28 12:38:42,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:38:42,086 INFO L481 AbstractCegarLoop]: Abstraction has 5378 states and 8227 transitions. [2020-10-28 12:38:42,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:38:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 8227 transitions. [2020-10-28 12:38:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 12:38:42,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:38:42,101 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, 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] [2020-10-28 12:38:42,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:38:42,103 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:38:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:38:42,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1306176975, now seen corresponding path program 1 times [2020-10-28 12:38:42,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:38:42,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519200343] [2020-10-28 12:38:42,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:38:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:42,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:42,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:43,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:43,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:38:43,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:38:43,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1220 [2020-10-28 12:38:43,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:43,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:38:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:38:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:38:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:38:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:43,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:43,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:43,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:38:43,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:43,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:38:43,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:43,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:38:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:38:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:38:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:38:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:43,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:43,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:43,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 12:38:43,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:43,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 12:38:43,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:43,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:38:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:38:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:38:43,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:38:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:38:43,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519200343] [2020-10-28 12:38:43,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:38:43,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:38:43,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593328089] [2020-10-28 12:38:43,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:38:43,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:38:43,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:38:43,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:38:43,979 INFO L87 Difference]: Start difference. First operand 5378 states and 8227 transitions. Second operand 7 states. [2020-10-28 12:39:15,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:39:15,234 INFO L93 Difference]: Finished difference Result 16026 states and 25410 transitions. [2020-10-28 12:39:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:39:15,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 12:39:15,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:39:15,312 INFO L225 Difference]: With dead ends: 16026 [2020-10-28 12:39:15,312 INFO L226 Difference]: Without dead ends: 10654 [2020-10-28 12:39:15,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:39:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10654 states. [2020-10-28 12:39:15,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10654 to 10459. [2020-10-28 12:39:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10459 states. [2020-10-28 12:39:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10459 states to 10459 states and 14216 transitions. [2020-10-28 12:39:15,807 INFO L78 Accepts]: Start accepts. Automaton has 10459 states and 14216 transitions. Word has length 134 [2020-10-28 12:39:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:39:15,808 INFO L481 AbstractCegarLoop]: Abstraction has 10459 states and 14216 transitions. [2020-10-28 12:39:15,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:39:15,808 INFO L276 IsEmpty]: Start isEmpty. Operand 10459 states and 14216 transitions. [2020-10-28 12:39:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 12:39:15,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:39:15,810 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, 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] [2020-10-28 12:39:15,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:39:15,811 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:39:15,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:39:15,812 INFO L82 PathProgramCache]: Analyzing trace with hash -368827651, now seen corresponding path program 1 times [2020-10-28 12:39:15,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:39:15,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212329030] [2020-10-28 12:39:15,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:39:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:16,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:17,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:17,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 12:39:17,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:39:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1548 [2020-10-28 12:39:17,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:17,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:39:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:39:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:39:17,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:17,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:39:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:17,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:17,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:17,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:39:17,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:39:17,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:17,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:39:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:39:17,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:17,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:39:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:17,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:17,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:39:17,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 12:39:17,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:17,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:39:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:39:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:39:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:39:17,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212329030] [2020-10-28 12:39:17,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:39:17,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:39:17,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178873429] [2020-10-28 12:39:17,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:39:17,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:39:17,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:39:17,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:39:17,955 INFO L87 Difference]: Start difference. First operand 10459 states and 14216 transitions. Second operand 7 states. [2020-10-28 12:39:46,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:39:46,094 INFO L93 Difference]: Finished difference Result 29247 states and 41970 transitions. [2020-10-28 12:39:46,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:39:46,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-28 12:39:46,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:39:46,185 INFO L225 Difference]: With dead ends: 29247 [2020-10-28 12:39:46,186 INFO L226 Difference]: Without dead ends: 18794 [2020-10-28 12:39:46,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:39:46,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18794 states. [2020-10-28 12:39:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18794 to 18374. [2020-10-28 12:39:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18374 states. [2020-10-28 12:39:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18374 states to 18374 states and 24126 transitions. [2020-10-28 12:39:46,807 INFO L78 Accepts]: Start accepts. Automaton has 18374 states and 24126 transitions. Word has length 140 [2020-10-28 12:39:46,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:39:46,809 INFO L481 AbstractCegarLoop]: Abstraction has 18374 states and 24126 transitions. [2020-10-28 12:39:46,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:39:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 18374 states and 24126 transitions. [2020-10-28 12:39:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-28 12:39:46,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:39:46,816 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:39:46,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:39:46,817 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:39:46,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:39:46,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1562438482, now seen corresponding path program 1 times [2020-10-28 12:39:46,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:39:46,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646934201] [2020-10-28 12:39:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:39:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:51,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:51,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 12:39:51,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:39:51,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 12:39:51,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:51,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:39:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:39:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:39:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:52,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:39:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:52,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:52,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:52,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:39:52,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:52,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:39:52,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:52,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:39:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:39:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:52,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:39:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:52,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:52,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:52,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:39:52,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:52,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:39:52,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:52,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:39:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:39:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:39:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:52,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:52,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:52,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:39:52,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:39:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 12:39:52,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:52,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:39:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:39:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 12:39:52,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646934201] [2020-10-28 12:39:52,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:39:52,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:39:52,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150689600] [2020-10-28 12:39:52,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:39:52,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:39:52,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:39:52,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:39:52,639 INFO L87 Difference]: Start difference. First operand 18374 states and 24126 transitions. Second operand 5 states. [2020-10-28 12:40:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:40:13,874 INFO L93 Difference]: Finished difference Result 44381 states and 61668 transitions. [2020-10-28 12:40:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:40:13,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-28 12:40:13,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:40:14,020 INFO L225 Difference]: With dead ends: 44381 [2020-10-28 12:40:14,020 INFO L226 Difference]: Without dead ends: 26816 [2020-10-28 12:40:14,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:40:14,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26816 states. [2020-10-28 12:40:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26816 to 26732. [2020-10-28 12:40:14,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26732 states. [2020-10-28 12:40:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26732 states to 26732 states and 36560 transitions. [2020-10-28 12:40:15,039 INFO L78 Accepts]: Start accepts. Automaton has 26732 states and 36560 transitions. Word has length 233 [2020-10-28 12:40:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:40:15,040 INFO L481 AbstractCegarLoop]: Abstraction has 26732 states and 36560 transitions. [2020-10-28 12:40:15,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:40:15,040 INFO L276 IsEmpty]: Start isEmpty. Operand 26732 states and 36560 transitions. [2020-10-28 12:40:15,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-28 12:40:15,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:40:15,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:40:15,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:40:15,048 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:40:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:40:15,049 INFO L82 PathProgramCache]: Analyzing trace with hash -2004990482, now seen corresponding path program 1 times [2020-10-28 12:40:15,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:40:15,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187942885] [2020-10-28 12:40:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:40:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:15,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:15,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:15,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:20,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:20,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-28 12:40:20,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:40:20,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 12:40:20,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:20,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:40:20,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:40:20,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:40:20,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:20,404 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:40:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:40:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:20,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:20,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:20,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:40:20,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:20,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:40:20,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:20,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:40:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:40:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:20,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:40:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:20,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:20,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:20,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:40:20,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 12:40:20,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:20,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:40:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:40:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:20,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:40:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:20,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:20,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:40:20,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:20,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 12:40:20,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:20,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:40:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:40:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:40:20,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:40:21,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187942885] [2020-10-28 12:40:21,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:40:21,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:40:21,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490434835] [2020-10-28 12:40:21,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:40:21,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:40:21,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:40:21,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:40:21,162 INFO L87 Difference]: Start difference. First operand 26732 states and 36560 transitions. Second operand 7 states. [2020-10-28 12:40:21,335 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:40:53,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:40:53,771 INFO L93 Difference]: Finished difference Result 72142 states and 103245 transitions. [2020-10-28 12:40:53,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:40:53,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-28 12:40:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:40:53,959 INFO L225 Difference]: With dead ends: 72142 [2020-10-28 12:40:53,959 INFO L226 Difference]: Without dead ends: 46219 [2020-10-28 12:40:54,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:40:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46219 states. [2020-10-28 12:40:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46219 to 46001. [2020-10-28 12:40:55,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46001 states. [2020-10-28 12:40:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46001 states to 46001 states and 65795 transitions. [2020-10-28 12:40:55,356 INFO L78 Accepts]: Start accepts. Automaton has 46001 states and 65795 transitions. Word has length 263 [2020-10-28 12:40:55,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:40:55,357 INFO L481 AbstractCegarLoop]: Abstraction has 46001 states and 65795 transitions. [2020-10-28 12:40:55,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:40:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 46001 states and 65795 transitions. [2020-10-28 12:40:55,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-28 12:40:55,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:40:55,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:40:55,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:40:55,364 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:40:55,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:40:55,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1984052260, now seen corresponding path program 1 times [2020-10-28 12:40:55,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:40:55,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58312190] [2020-10-28 12:40:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:40:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:55,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:56,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:57,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:59,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:59,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-28 12:40:59,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:40:59,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4251 [2020-10-28 12:40:59,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:59,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:40:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:40:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 12:40:59,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:40:59,897 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:40:59,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:40:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:59,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:59,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:59,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:40:59,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:40:59,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:59,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:40:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:40:59,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:40:59,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:41:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:00,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:00,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:41:00,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:00,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 12:41:00,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:00,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:41:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:41:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:41:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:41:00,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:41:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:00,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:00,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:00,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:41:00,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:00,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 12:41:00,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:00,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:00,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:41:00,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:41:00,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:41:00,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:41:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:41:00,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58312190] [2020-10-28 12:41:00,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:41:00,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:41:00,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850017434] [2020-10-28 12:41:00,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:41:00,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:41:00,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:41:00,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:41:00,635 INFO L87 Difference]: Start difference. First operand 46001 states and 65795 transitions. Second operand 7 states. [2020-10-28 12:41:02,023 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 12:41:05,278 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66