/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem12_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:08:07,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:08:07,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:08:07,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:08:07,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:08:07,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:08:07,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:08:07,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:08:07,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:08:07,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:08:07,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:08:07,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:08:07,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:08:07,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:08:07,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:08:07,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:08:07,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:08:07,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:08:07,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:08:07,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:08:07,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:08:07,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:08:07,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:08:07,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:08:07,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:08:07,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:08:07,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:08:07,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:08:07,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:08:07,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:08:07,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:08:07,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:08:07,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:08:07,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:08:07,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:08:07,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:08:07,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:08:07,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:08:07,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:08:07,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:08:07,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:08:07,315 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 [2020-10-29 07:08:07,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:08:07,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:08:07,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:08:07,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:08:07,383 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:08:07,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:08:07,383 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:08:07,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:08:07,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:08:07,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:08:07,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:08:07,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:08:07,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:08:07,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:08:07,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:08:07,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:08:07,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:08:07,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:08:07,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:08:07,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:08:07,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:08:07,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:08:07,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:08:07,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:08:07,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:08:07,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:08:07,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:08:07,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:08:07,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:08:07,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:08:07,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:08:07,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:08:07,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:08:07,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:08:07,880 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:08:07,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label56.c [2020-10-29 07:08:07,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9df0d8c58/e2a6dd8dc1fa40fabc40484b44a56111/FLAGa14f7052c [2020-10-29 07:08:08,943 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:08:08,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label56.c [2020-10-29 07:08:08,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9df0d8c58/e2a6dd8dc1fa40fabc40484b44a56111/FLAGa14f7052c [2020-10-29 07:08:09,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9df0d8c58/e2a6dd8dc1fa40fabc40484b44a56111 [2020-10-29 07:08:09,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:08:09,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:08:09,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:08:09,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:08:09,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:08:09,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:08:09" (1/1) ... [2020-10-29 07:08:09,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c74a02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:09, skipping insertion in model container [2020-10-29 07:08:09,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:08:09" (1/1) ... [2020-10-29 07:08:09,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:08:09,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:08:10,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:08:10,985 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:08:11,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:08:11,831 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:08:11,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:11 WrapperNode [2020-10-29 07:08:11,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:08:11,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:08:11,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:08:11,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:08:11,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:11" (1/1) ... [2020-10-29 07:08:11,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:11" (1/1) ... [2020-10-29 07:08:11,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:11" (1/1) ... [2020-10-29 07:08:11,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:11" (1/1) ... [2020-10-29 07:08:12,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:11" (1/1) ... [2020-10-29 07:08:12,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:11" (1/1) ... [2020-10-29 07:08:12,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:11" (1/1) ... [2020-10-29 07:08:12,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:08:12,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:08:12,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:08:12,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:08:12,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:11" (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 [2020-10-29 07:08:12,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:08:12,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:08:12,309 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:08:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:08:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:08:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:08:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:08:12,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:08:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:08:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:08:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:08:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:08:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:08:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:08:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:08:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:08:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:08:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:08:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:08:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:08:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:08:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:08:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:08:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:08:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:08:18,126 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:08:18,126 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:08:18,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:08:18 BoogieIcfgContainer [2020-10-29 07:08:18,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:08:18,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:08:18,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:08:18,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:08:18,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:08:09" (1/3) ... [2020-10-29 07:08:18,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:08:18, skipping insertion in model container [2020-10-29 07:08:18,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:11" (2/3) ... [2020-10-29 07:08:18,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:08:18, skipping insertion in model container [2020-10-29 07:08:18,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:08:18" (3/3) ... [2020-10-29 07:08:18,157 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label56.c [2020-10-29 07:08:18,167 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:08:18,173 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:08:18,190 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:08:18,229 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:08:18,230 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:08:18,230 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:08:18,230 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:08:18,230 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:08:18,230 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:08:18,230 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:08:18,231 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:08:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:08:18,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 07:08:18,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:18,283 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] [2020-10-29 07:08:18,284 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:18,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1171084524, now seen corresponding path program 1 times [2020-10-29 07:08:18,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:18,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921224041] [2020-10-29 07:08:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:19,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:19,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:08:19,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:19,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-10-29 07:08:19,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:19,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:08:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:08:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:08:19,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:19,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:19,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:19,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:19,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:19,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:08:19,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:19,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:19,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:08:19,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921224041] [2020-10-29 07:08:19,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:08:19,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:08:19,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71871697] [2020-10-29 07:08:19,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:08:19,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:19,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:08:19,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:08:19,704 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-29 07:08:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:37,385 INFO L93 Difference]: Finished difference Result 3258 states and 6299 transitions. [2020-10-29 07:08:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:08:37,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-29 07:08:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:37,447 INFO L225 Difference]: With dead ends: 3258 [2020-10-29 07:08:37,448 INFO L226 Difference]: Without dead ends: 2347 [2020-10-29 07:08:37,466 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 [2020-10-29 07:08:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-29 07:08:37,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-29 07:08:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-29 07:08:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3835 transitions. [2020-10-29 07:08:37,715 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3835 transitions. Word has length 63 [2020-10-29 07:08:37,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:37,716 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3835 transitions. [2020-10-29 07:08:37,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:08:37,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3835 transitions. [2020-10-29 07:08:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 07:08:37,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:37,740 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, 1] [2020-10-29 07:08:37,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:08:37,741 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:37,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:37,743 INFO L82 PathProgramCache]: Analyzing trace with hash 838302473, now seen corresponding path program 1 times [2020-10-29 07:08:37,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:37,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10795331] [2020-10-29 07:08:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:38,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:39,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:39,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 07:08:39,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:08:39,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1858 [2020-10-29 07:08:39,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:39,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:08:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:08:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:08:39,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:39,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:39,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:08:39,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:39,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:08:40,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:40,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:40,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:40,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:40,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 07:08:40,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:08:40,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-29 07:08:40,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:40,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:08:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:08:40,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10795331] [2020-10-29 07:08:40,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:40,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:08:40,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470296827] [2020-10-29 07:08:40,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:08:40,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:40,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:08:40,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:40,536 INFO L87 Difference]: Start difference. First operand 2332 states and 3835 transitions. Second operand 7 states. [2020-10-29 07:08:42,814 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:08:55,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:55,201 INFO L93 Difference]: Finished difference Result 7096 states and 11763 transitions. [2020-10-29 07:08:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:08:55,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-29 07:08:55,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:55,238 INFO L225 Difference]: With dead ends: 7096 [2020-10-29 07:08:55,238 INFO L226 Difference]: Without dead ends: 4770 [2020-10-29 07:08:55,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:08:55,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2020-10-29 07:08:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 4699. [2020-10-29 07:08:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4699 states. [2020-10-29 07:08:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4699 states to 4699 states and 6781 transitions. [2020-10-29 07:08:55,413 INFO L78 Accepts]: Start accepts. Automaton has 4699 states and 6781 transitions. Word has length 141 [2020-10-29 07:08:55,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:55,414 INFO L481 AbstractCegarLoop]: Abstraction has 4699 states and 6781 transitions. [2020-10-29 07:08:55,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:08:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4699 states and 6781 transitions. [2020-10-29 07:08:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 07:08:55,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:55,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:08:55,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:08:55,420 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:55,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:55,421 INFO L82 PathProgramCache]: Analyzing trace with hash 210266112, now seen corresponding path program 1 times [2020-10-29 07:08:55,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:55,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713351172] [2020-10-29 07:08:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:55,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:55,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:56,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:00,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:00,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 07:09:00,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:09:00,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 07:09:00,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:00,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:09:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:09:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 07:09:00,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:00,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:00,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:00,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:00,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:00,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:00,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:09:00,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:00,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:09:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:00,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:00,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:00,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:00,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:09:00,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:09:00,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 07:09:00,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:00,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:00,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:00,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:00,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:09:00,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:00,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 07:09:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:01,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:01,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:01,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:09:01,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:01,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 07:09:01,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:01,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:09:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:09:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:09:01,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713351172] [2020-10-29 07:09:01,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:09:01,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 07:09:01,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295337554] [2020-10-29 07:09:01,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:09:01,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:01,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:09:01,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:09:01,329 INFO L87 Difference]: Start difference. First operand 4699 states and 6781 transitions. Second operand 9 states. [2020-10-29 07:09:30,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:30,563 INFO L93 Difference]: Finished difference Result 19854 states and 31125 transitions. [2020-10-29 07:09:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 07:09:30,565 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 215 [2020-10-29 07:09:30,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:30,690 INFO L225 Difference]: With dead ends: 19854 [2020-10-29 07:09:30,690 INFO L226 Difference]: Without dead ends: 15161 [2020-10-29 07:09:30,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-29 07:09:30,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15161 states. [2020-10-29 07:09:31,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15161 to 15039. [2020-10-29 07:09:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15039 states. [2020-10-29 07:09:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15039 states to 15039 states and 21308 transitions. [2020-10-29 07:09:31,370 INFO L78 Accepts]: Start accepts. Automaton has 15039 states and 21308 transitions. Word has length 215 [2020-10-29 07:09:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:31,370 INFO L481 AbstractCegarLoop]: Abstraction has 15039 states and 21308 transitions. [2020-10-29 07:09:31,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:09:31,370 INFO L276 IsEmpty]: Start isEmpty. Operand 15039 states and 21308 transitions. [2020-10-29 07:09:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 07:09:31,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:31,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:09:31,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:09:31,378 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:31,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:31,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1254912233, now seen corresponding path program 1 times [2020-10-29 07:09:31,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:31,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218819039] [2020-10-29 07:09:31,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:31,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:33,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:33,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 07:09:33,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:09:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1679 [2020-10-29 07:09:33,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:33,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:09:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:09:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-29 07:09:33,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:09:33,312 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:09:33,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:33,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:33,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:33,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:33,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:09:33,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:33,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:09:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:33,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:33,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:33,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:33,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 07:09:33,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:33,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-29 07:09:33,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:33,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:09:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:09:33,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:09:34,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218819039] [2020-10-29 07:09:34,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:09:34,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:09:34,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826767905] [2020-10-29 07:09:34,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:09:34,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:34,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:09:34,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:09:34,143 INFO L87 Difference]: Start difference. First operand 15039 states and 21308 transitions. Second operand 7 states. [2020-10-29 07:09:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:53,818 INFO L93 Difference]: Finished difference Result 35972 states and 54220 transitions. [2020-10-29 07:09:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:09:53,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-29 07:09:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:53,951 INFO L225 Difference]: With dead ends: 35972 [2020-10-29 07:09:53,952 INFO L226 Difference]: Without dead ends: 20939 [2020-10-29 07:09:54,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:09:54,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20939 states. [2020-10-29 07:09:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20939 to 19117. [2020-10-29 07:09:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19117 states. [2020-10-29 07:09:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19117 states to 19117 states and 26870 transitions. [2020-10-29 07:09:54,797 INFO L78 Accepts]: Start accepts. Automaton has 19117 states and 26870 transitions. Word has length 216 [2020-10-29 07:09:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:54,799 INFO L481 AbstractCegarLoop]: Abstraction has 19117 states and 26870 transitions. [2020-10-29 07:09:54,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:09:54,799 INFO L276 IsEmpty]: Start isEmpty. Operand 19117 states and 26870 transitions. [2020-10-29 07:09:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-29 07:09:54,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:54,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:09:54,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:09:54,810 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:54,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:54,810 INFO L82 PathProgramCache]: Analyzing trace with hash -381188800, now seen corresponding path program 1 times [2020-10-29 07:09:54,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:54,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656295588] [2020-10-29 07:09:54,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:54,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:58,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:58,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-29 07:09:58,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:09:58,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3620 [2020-10-29 07:09:58,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:58,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:09:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:09:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:09:58,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:58,731 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:09:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:58,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:58,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:58,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:58,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:09:58,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:58,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:09:58,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:58,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:58,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:59,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:59,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:09:59,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-29 07:09:59,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:59,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:59,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:59,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:09:59,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:09:59,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:59,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:09:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:59,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:59,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:59,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:09:59,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:59,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:09:59,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:59,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:09:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:09:59,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:09:59,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 110 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:09:59,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656295588] [2020-10-29 07:09:59,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:09:59,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:09:59,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47694698] [2020-10-29 07:09:59,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:09:59,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:59,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:09:59,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:09:59,638 INFO L87 Difference]: Start difference. First operand 19117 states and 26870 transitions. Second operand 7 states. [2020-10-29 07:10:16,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:10:16,562 INFO L93 Difference]: Finished difference Result 38703 states and 56104 transitions. [2020-10-29 07:10:16,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:10:16,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-29 07:10:16,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:10:16,686 INFO L225 Difference]: With dead ends: 38703 [2020-10-29 07:10:16,687 INFO L226 Difference]: Without dead ends: 20359 [2020-10-29 07:10:16,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:10:16,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20359 states. [2020-10-29 07:10:17,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20359 to 19974. [2020-10-29 07:10:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19974 states. [2020-10-29 07:10:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19974 states to 19974 states and 27870 transitions. [2020-10-29 07:10:17,659 INFO L78 Accepts]: Start accepts. Automaton has 19974 states and 27870 transitions. Word has length 284 [2020-10-29 07:10:17,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:10:17,660 INFO L481 AbstractCegarLoop]: Abstraction has 19974 states and 27870 transitions. [2020-10-29 07:10:17,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:10:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 19974 states and 27870 transitions. [2020-10-29 07:10:17,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-29 07:10:17,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:17,668 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, 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] [2020-10-29 07:10:17,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:10:17,668 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:17,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:17,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2075992328, now seen corresponding path program 1 times [2020-10-29 07:10:17,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:17,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182422930] [2020-10-29 07:10:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:17,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:18,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:18,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-29 07:10:18,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-29 07:10:18,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:18,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-29 07:10:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 07:10:18,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:18,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:18,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:18,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:18,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:18,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:18,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:10:18,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:18,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:18,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:18,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:10:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:18,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:18,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:18,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:10:18,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:18,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:10:18,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:18,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:18,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:10:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:18,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:18,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 07:10:18,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:18,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 07:10:18,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:18,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 07:10:18,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 07:10:18,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182422930] [2020-10-29 07:10:18,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:10:18,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:10:18,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842580039] [2020-10-29 07:10:18,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:10:18,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:10:18,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:10:18,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:10:18,923 INFO L87 Difference]: Start difference. First operand 19974 states and 27870 transitions. Second operand 5 states. [2020-10-29 07:10:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:10:34,522 INFO L93 Difference]: Finished difference Result 38454 states and 54412 transitions. [2020-10-29 07:10:34,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:10:34,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-29 07:10:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:10:34,588 INFO L225 Difference]: With dead ends: 38454 [2020-10-29 07:10:34,588 INFO L226 Difference]: Without dead ends: 20022 [2020-10-29 07:10:34,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:10:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20022 states. [2020-10-29 07:10:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20022 to 19971. [2020-10-29 07:10:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19971 states. [2020-10-29 07:10:35,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19971 states to 19971 states and 25558 transitions. [2020-10-29 07:10:35,064 INFO L78 Accepts]: Start accepts. Automaton has 19971 states and 25558 transitions. Word has length 311 [2020-10-29 07:10:35,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:10:35,065 INFO L481 AbstractCegarLoop]: Abstraction has 19971 states and 25558 transitions. [2020-10-29 07:10:35,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:10:35,066 INFO L276 IsEmpty]: Start isEmpty. Operand 19971 states and 25558 transitions. [2020-10-29 07:10:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-29 07:10:35,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:35,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:10:35,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:10:35,078 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:35,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:35,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1948305281, now seen corresponding path program 1 times [2020-10-29 07:10:35,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:35,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812880465] [2020-10-29 07:10:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:35,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:35,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:37,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:37,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-29 07:10:37,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:10:37,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2515 [2020-10-29 07:10:37,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:37,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:10:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 07:10:37,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:37,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:37,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:37,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:37,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:37,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:10:37,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:37,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:37,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:10:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:37,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:38,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:10:38,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:10:38,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:38,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:10:38,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:38,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:10:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:38,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:38,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:38,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:10:38,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:38,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-29 07:10:38,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:38,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:10:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:10:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:38,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-29 07:10:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:38,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:38,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:10:38,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:38,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 07:10:38,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:38,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:10:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:38,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 241 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 07:10:38,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812880465] [2020-10-29 07:10:38,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:10:38,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:10:38,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945613233] [2020-10-29 07:10:38,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:10:38,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:10:38,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:10:38,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:10:38,912 INFO L87 Difference]: Start difference. First operand 19971 states and 25558 transitions. Second operand 7 states. [2020-10-29 07:10:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:10:56,968 INFO L93 Difference]: Finished difference Result 42848 states and 55590 transitions. [2020-10-29 07:10:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:10:56,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2020-10-29 07:10:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:10:57,046 INFO L225 Difference]: With dead ends: 42848 [2020-10-29 07:10:57,046 INFO L226 Difference]: Without dead ends: 22041 [2020-10-29 07:10:57,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:10:57,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22041 states. [2020-10-29 07:10:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22041 to 21761. [2020-10-29 07:10:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21761 states. [2020-10-29 07:10:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21761 states to 21761 states and 27300 transitions. [2020-10-29 07:10:57,606 INFO L78 Accepts]: Start accepts. Automaton has 21761 states and 27300 transitions. Word has length 359 [2020-10-29 07:10:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:10:57,607 INFO L481 AbstractCegarLoop]: Abstraction has 21761 states and 27300 transitions. [2020-10-29 07:10:57,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:10:57,607 INFO L276 IsEmpty]: Start isEmpty. Operand 21761 states and 27300 transitions. [2020-10-29 07:10:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-29 07:10:57,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:57,626 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 07:10:57,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:10:57,627 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:57,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:57,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1874959911, now seen corresponding path program 1 times [2020-10-29 07:10:57,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:57,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908953981] [2020-10-29 07:10:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:01,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:01,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-29 07:11:01,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:11:01,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3364 [2020-10-29 07:11:01,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:01,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:11:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:11:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:11:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:11:01,443 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:11:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:11:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:01,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:01,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:01,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:11:01,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:01,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:11:01,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:01,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:11:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:11:01,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:11:01,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:11:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:01,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:01,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:01,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:11:01,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:01,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 07:11:01,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:01,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:11:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:11:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:11:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:01,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:01,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 07:11:01,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:01,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 07:11:01,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:01,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:01,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:11:01,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:11:01,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:11:01,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-29 07:11:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:02,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:02,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:11:02,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:02,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:11:02,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:02,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:11:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:11:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:11:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 287 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 07:11:02,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908953981] [2020-10-29 07:11:02,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:11:02,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:11:02,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280248866] [2020-10-29 07:11:02,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:11:02,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:11:02,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:11:02,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:11:02,425 INFO L87 Difference]: Start difference. First operand 21761 states and 27300 transitions. Second operand 7 states. [2020-10-29 07:11:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:11:28,480 INFO L93 Difference]: Finished difference Result 62261 states and 81899 transitions. [2020-10-29 07:11:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:11:28,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-29 07:11:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:11:28,612 INFO L225 Difference]: With dead ends: 62261 [2020-10-29 07:11:28,612 INFO L226 Difference]: Without dead ends: 41273 [2020-10-29 07:11:28,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:11:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41273 states. [2020-10-29 07:11:29,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41273 to 40282. [2020-10-29 07:11:29,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40282 states. [2020-10-29 07:11:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40282 states to 40282 states and 51169 transitions. [2020-10-29 07:11:29,700 INFO L78 Accepts]: Start accepts. Automaton has 40282 states and 51169 transitions. Word has length 402 [2020-10-29 07:11:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:11:29,701 INFO L481 AbstractCegarLoop]: Abstraction has 40282 states and 51169 transitions. [2020-10-29 07:11:29,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:11:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 40282 states and 51169 transitions. [2020-10-29 07:11:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-29 07:11:29,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:11:29,715 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 07:11:29,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:11:29,716 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:11:29,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:11:29,716 INFO L82 PathProgramCache]: Analyzing trace with hash -500301343, now seen corresponding path program 1 times [2020-10-29 07:11:29,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:11:29,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376232443] [2020-10-29 07:11:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:11:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:29,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:34,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:34,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-29 07:11:34,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:11:34,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 07:11:34,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:34,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:11:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:11:34,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 07:11:34,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:35,079 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:11:35,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:11:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:35,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:35,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:35,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:11:35,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:35,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:11:35,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:35,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:35,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:11:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:11:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:35,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:11:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:35,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:35,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:11:35,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:35,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:11:35,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:35,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:11:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:11:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:11:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:35,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:35,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:35,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 07:11:35,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:35,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 07:11:35,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:35,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:11:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:11:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:11:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:35,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-29 07:11:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:35,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:35,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:35,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:11:35,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:35,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 07:11:35,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:35,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:11:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:11:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:11:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 357 proven. 72 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:11:36,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376232443] [2020-10-29 07:11:36,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:11:36,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 07:11:36,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356829412] [2020-10-29 07:11:36,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 07:11:36,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:11:36,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 07:11:36,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:11:36,249 INFO L87 Difference]: Start difference. First operand 40282 states and 51169 transitions. Second operand 11 states.