/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/Problem19_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:10:26,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:10:26,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:10:26,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:10:26,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:10:26,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:10:26,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:10:26,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:10:26,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:10:26,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:10:26,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:10:26,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:10:26,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:10:26,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:10:26,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:10:26,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:10:26,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:10:26,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:10:26,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:10:26,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:10:26,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:10:26,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:10:26,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:10:26,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:10:26,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:10:26,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:10:26,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:10:26,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:10:26,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:10:26,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:10:26,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:10:26,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:10:26,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:10:26,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:10:26,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:10:26,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:10:26,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:10:26,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:10:26,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:10:26,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:10:26,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:10:26,323 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 14:10:26,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:10:26,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:10:26,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:10:26,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:10:26,384 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:10:26,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:10:26,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:10:26,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:10:26,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:10:26,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:10:26,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:10:26,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:10:26,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:10:26,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:10:26,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:10:26,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:10:26,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:10:26,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:10:26,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:10:26,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:10:26,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:10:26,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:10:26,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:10:26,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:10:26,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:10:26,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:10:26,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:10:26,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:10:26,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:10:26,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:10:26,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:10:26,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:10:26,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:10:26,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:10:26,886 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:10:26,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label30.c [2020-10-28 14:10:26,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4245c8e8/d9ee6bf021b7400289a90d4354053d90/FLAG9eabc86eb [2020-10-28 14:10:28,236 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:10:28,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label30.c [2020-10-28 14:10:28,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4245c8e8/d9ee6bf021b7400289a90d4354053d90/FLAG9eabc86eb [2020-10-28 14:10:28,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4245c8e8/d9ee6bf021b7400289a90d4354053d90 [2020-10-28 14:10:28,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:10:28,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:10:28,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:10:28,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:10:28,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:10:28,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:10:28" (1/1) ... [2020-10-28 14:10:28,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305c2c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:28, skipping insertion in model container [2020-10-28 14:10:28,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:10:28" (1/1) ... [2020-10-28 14:10:28,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:10:28,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:10:31,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:10:31,052 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:10:32,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:10:32,283 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:10:32,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:32 WrapperNode [2020-10-28 14:10:32,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:10:32,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:10:32,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:10:32,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:10:32,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:32" (1/1) ... [2020-10-28 14:10:32,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:32" (1/1) ... [2020-10-28 14:10:32,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:32" (1/1) ... [2020-10-28 14:10:32,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:32" (1/1) ... [2020-10-28 14:10:32,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:32" (1/1) ... [2020-10-28 14:10:32,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:32" (1/1) ... [2020-10-28 14:10:32,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:32" (1/1) ... [2020-10-28 14:10:32,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:10:32,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:10:32,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:10:32,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:10:32,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:32" (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 14:10:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:10:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:10:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:10:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:10:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:10:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:10:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:10:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:10:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:10:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:10:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:10:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:10:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:10:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:10:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:10:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:10:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:10:32,991 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:10:32,991 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:10:32,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:10:32,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:10:32,991 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:10:32,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:10:32,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:10:32,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:10:32,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:10:32,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:10:32,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:10:32,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:10:49,634 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:10:49,634 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:10:49,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:10:49 BoogieIcfgContainer [2020-10-28 14:10:49,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:10:49,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:10:49,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:10:49,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:10:49,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:10:28" (1/3) ... [2020-10-28 14:10:49,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32585f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:10:49, skipping insertion in model container [2020-10-28 14:10:49,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:10:32" (2/3) ... [2020-10-28 14:10:49,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32585f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:10:49, skipping insertion in model container [2020-10-28 14:10:49,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:10:49" (3/3) ... [2020-10-28 14:10:49,650 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label30.c [2020-10-28 14:10:49,662 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:10:49,669 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:10:49,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:10:49,720 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:10:49,720 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:10:49,720 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:10:49,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:10:49,721 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:10:49,721 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:10:49,721 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:10:49,721 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:10:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:10:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 14:10:49,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:10:49,791 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] [2020-10-28 14:10:49,791 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:10:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:10:49,798 INFO L82 PathProgramCache]: Analyzing trace with hash -945310858, now seen corresponding path program 1 times [2020-10-28 14:10:49,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:10:49,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487484414] [2020-10-28 14:10:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:10:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:10:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:10:50,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:10:50,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 14:10:50,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:10:50,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-28 14:10:50,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:10:50,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:10:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:10:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:10:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 14:10:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:10:50,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:10:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:10:50,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:10:50,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:10:50,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:10:50,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:10:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:10:50,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:10:50,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:10:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:10:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:10:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:10:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:10:50,873 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 14:10:50,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487484414] [2020-10-28 14:10:50,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:10:50,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:10:50,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056117258] [2020-10-28 14:10:50,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:10:50,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:10:50,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:10:50,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:10:50,914 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-28 14:11:30,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:11:30,977 INFO L93 Difference]: Finished difference Result 6488 states and 12312 transitions. [2020-10-28 14:11:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:11:30,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-28 14:11:30,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:11:31,053 INFO L225 Difference]: With dead ends: 6488 [2020-10-28 14:11:31,054 INFO L226 Difference]: Without dead ends: 4639 [2020-10-28 14:11:31,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:11:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4639 states. [2020-10-28 14:11:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4639 to 4630. [2020-10-28 14:11:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4630 states. [2020-10-28 14:11:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4630 states to 4630 states and 7761 transitions. [2020-10-28 14:11:31,474 INFO L78 Accepts]: Start accepts. Automaton has 4630 states and 7761 transitions. Word has length 55 [2020-10-28 14:11:31,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:11:31,477 INFO L481 AbstractCegarLoop]: Abstraction has 4630 states and 7761 transitions. [2020-10-28 14:11:31,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:11:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4630 states and 7761 transitions. [2020-10-28 14:11:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 14:11:31,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:11:31,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:31,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:11:31,502 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:11:31,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:11:31,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1778804920, now seen corresponding path program 1 times [2020-10-28 14:11:31,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:11:31,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985488804] [2020-10-28 14:11:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:11:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:11:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:32,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:33,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:11:33,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 14:11:33,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:11:33,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1558 [2020-10-28 14:11:33,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:11:33,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:11:33,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:11:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:11:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 14:11:33,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:11:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:11:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:11:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:33,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:11:33,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:11:33,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:11:33,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:11:33,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:11:33,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:11:33,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:11:33,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:11:33,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:11:33,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:11:33,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:11:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:11:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:33,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:11:33,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 14:11:33,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:11:33,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-28 14:11:33,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:11:33,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:11:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:11:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:11:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 14:11:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:11:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:11:33,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985488804] [2020-10-28 14:11:33,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:11:33,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:11:33,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448856626] [2020-10-28 14:11:33,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:11:33,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:11:33,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:11:33,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:11:33,836 INFO L87 Difference]: Start difference. First operand 4630 states and 7761 transitions. Second operand 7 states. [2020-10-28 14:12:16,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:12:16,466 INFO L93 Difference]: Finished difference Result 10809 states and 17800 transitions. [2020-10-28 14:12:16,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:12:16,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-28 14:12:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:12:16,508 INFO L225 Difference]: With dead ends: 10809 [2020-10-28 14:12:16,508 INFO L226 Difference]: Without dead ends: 6185 [2020-10-28 14:12:16,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 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 14:12:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6185 states. [2020-10-28 14:12:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6185 to 6145. [2020-10-28 14:12:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6145 states. [2020-10-28 14:12:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 9681 transitions. [2020-10-28 14:12:16,717 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 9681 transitions. Word has length 144 [2020-10-28 14:12:16,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:12:16,717 INFO L481 AbstractCegarLoop]: Abstraction has 6145 states and 9681 transitions. [2020-10-28 14:12:16,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:12:16,718 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 9681 transitions. [2020-10-28 14:12:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 14:12:16,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:12:16,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:16,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:12:16,722 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:12:16,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:12:16,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1072124876, now seen corresponding path program 1 times [2020-10-28 14:12:16,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:12:16,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383255307] [2020-10-28 14:12:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:12:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:12:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:12:17,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:12:18,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:12:18,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 14:12:18,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:12:18,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1515 [2020-10-28 14:12:18,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:12:18,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:12:18,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:12:18,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:12:18,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 14:12:18,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:12:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:12:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:12:18,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:12:18,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:12:18,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:12:18,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:12:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:12:18,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:12:18,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:12:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:12:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:12:18,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:12:18,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:12:18,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:12:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:12:18,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:12:18,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:12:18,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 14:12:18,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:12:18,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-28 14:12:18,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:12:18,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:12:18,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:12:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:12:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 14:12:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:12:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:12:19,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383255307] [2020-10-28 14:12:19,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:12:19,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:12:19,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997137256] [2020-10-28 14:12:19,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:12:19,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:12:19,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:12:19,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:12:19,063 INFO L87 Difference]: Start difference. First operand 6145 states and 9681 transitions. Second operand 7 states. [2020-10-28 14:13:16,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:13:16,646 INFO L93 Difference]: Finished difference Result 18698 states and 30335 transitions. [2020-10-28 14:13:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:13:16,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-10-28 14:13:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:13:16,722 INFO L225 Difference]: With dead ends: 18698 [2020-10-28 14:13:16,723 INFO L226 Difference]: Without dead ends: 12559 [2020-10-28 14:13:16,744 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 14:13:16,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12559 states. [2020-10-28 14:13:17,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12559 to 12232. [2020-10-28 14:13:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12232 states. [2020-10-28 14:13:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12232 states to 12232 states and 17421 transitions. [2020-10-28 14:13:17,151 INFO L78 Accepts]: Start accepts. Automaton has 12232 states and 17421 transitions. Word has length 162 [2020-10-28 14:13:17,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:13:17,152 INFO L481 AbstractCegarLoop]: Abstraction has 12232 states and 17421 transitions. [2020-10-28 14:13:17,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:13:17,153 INFO L276 IsEmpty]: Start isEmpty. Operand 12232 states and 17421 transitions. [2020-10-28 14:13:17,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-28 14:13:17,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:13:17,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:17,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:13:17,157 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:13:17,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:13:17,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1008664834, now seen corresponding path program 1 times [2020-10-28 14:13:17,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:13:17,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645331022] [2020-10-28 14:13:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:13:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:13:17,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:17,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:18,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:19,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:13:19,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 14:13:19,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:13:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2153 [2020-10-28 14:13:19,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:13:19,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:13:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:13:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:13:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 14:13:19,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:13:19,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:13:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:13:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:19,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:13:19,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:13:19,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:13:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:13:19,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:13:19,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:13:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:13:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:13:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:13:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:13:19,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:13:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:13:19,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:13:19,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:13:19,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 14:13:19,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:13:19,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-28 14:13:19,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:13:19,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:13:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:13:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:13:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 14:13:19,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 14:13:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:13:20,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645331022] [2020-10-28 14:13:20,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:13:20,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:13:20,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344129879] [2020-10-28 14:13:20,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:13:20,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:13:20,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:13:20,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:13:20,223 INFO L87 Difference]: Start difference. First operand 12232 states and 17421 transitions. Second operand 8 states. [2020-10-28 14:13:20,404 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:13:24,496 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:14:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:14:33,751 INFO L93 Difference]: Finished difference Result 36856 states and 55759 transitions. [2020-10-28 14:14:33,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:14:33,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-10-28 14:14:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:14:33,885 INFO L225 Difference]: With dead ends: 36856 [2020-10-28 14:14:33,885 INFO L226 Difference]: Without dead ends: 24630 [2020-10-28 14:14:33,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:14:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24630 states.