/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/Problem05_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:23:46,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:23:46,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:23:46,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:23:46,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:23:46,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:23:46,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:23:46,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:23:46,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:23:46,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:23:46,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:23:46,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:23:46,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:23:46,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:23:46,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:23:46,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:23:46,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:23:46,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:23:46,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:23:46,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:23:46,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:23:46,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:23:46,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:23:46,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:23:46,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:23:46,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:23:46,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:23:46,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:23:46,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:23:46,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:23:46,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:23:46,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:23:46,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:23:46,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:23:46,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:23:46,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:23:46,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:23:46,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:23:46,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:23:46,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:23:46,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:23:46,243 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 05:23:46,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:23:46,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:23:46,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:23:46,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:23:46,308 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:23:46,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:23:46,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:23:46,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:23:46,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:23:46,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:23:46,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:23:46,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:23:46,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:23:46,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:23:46,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:23:46,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:23:46,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:23:46,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:23:46,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:23:46,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:23:46,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:23:46,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:23:46,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:23:46,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:23:46,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:23:46,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:23:46,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:23:46,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:23:46,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:23:46,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:23:46,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:23:46,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:23:46,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:23:46,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:23:46,801 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:23:46,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label23.c [2020-10-29 05:23:46,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e6754eef/5d93fc1349b94af3a59ab48104bb5b23/FLAG8087f28ba [2020-10-29 05:23:48,296 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:23:48,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label23.c [2020-10-29 05:23:48,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e6754eef/5d93fc1349b94af3a59ab48104bb5b23/FLAG8087f28ba [2020-10-29 05:23:48,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e6754eef/5d93fc1349b94af3a59ab48104bb5b23 [2020-10-29 05:23:48,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:23:48,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:23:48,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:23:48,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:23:48,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:23:48,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:23:48" (1/1) ... [2020-10-29 05:23:48,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4118f9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:48, skipping insertion in model container [2020-10-29 05:23:48,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:23:48" (1/1) ... [2020-10-29 05:23:48,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:23:48,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:23:51,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:23:51,376 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:23:52,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:23:52,860 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:23:52,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:52 WrapperNode [2020-10-29 05:23:52,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:23:52,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:23:52,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:23:52,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:23:52,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:52" (1/1) ... [2020-10-29 05:23:52,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:52" (1/1) ... [2020-10-29 05:23:52,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:52" (1/1) ... [2020-10-29 05:23:52,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:52" (1/1) ... [2020-10-29 05:23:53,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:52" (1/1) ... [2020-10-29 05:23:53,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:52" (1/1) ... [2020-10-29 05:23:53,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:52" (1/1) ... [2020-10-29 05:23:53,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:23:53,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:23:53,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:23:53,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:23:53,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:52" (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 05:23:53,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:23:53,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:23:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:23:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:23:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:23:53,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:23:53,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:23:53,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:23:53,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:23:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:23:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:23:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:23:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:23:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:23:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:23:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:23:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:23:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:23:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:23:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:23:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:23:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:23:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:23:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:23:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:23:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:23:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:23:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:23:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:23:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:23:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:23:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:23:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:24:03,805 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:24:03,805 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:24:03,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:03 BoogieIcfgContainer [2020-10-29 05:24:03,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:24:03,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:24:03,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:24:03,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:24:03,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:23:48" (1/3) ... [2020-10-29 05:24:03,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670f7322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:24:03, skipping insertion in model container [2020-10-29 05:24:03,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:52" (2/3) ... [2020-10-29 05:24:03,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670f7322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:24:03, skipping insertion in model container [2020-10-29 05:24:03,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:03" (3/3) ... [2020-10-29 05:24:03,822 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label23.c [2020-10-29 05:24:03,835 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:24:03,842 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:24:03,853 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:24:03,893 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:24:03,893 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:24:03,893 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:24:03,893 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:24:03,893 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:24:03,893 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:24:03,893 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:24:03,894 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:24:03,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:24:04,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1691 [2020-10-29 05:24:04,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:24:04,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:24:04,097 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:24:04,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:24:04,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1739260591, now seen corresponding path program 1 times [2020-10-29 05:24:04,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:24:04,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807504067] [2020-10-29 05:24:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:24:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:24:05,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:10,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:24:10,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1714 [2020-10-29 05:24:10,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:24:10,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 05:24:10,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:24:10,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:24:10,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:24:10,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:24:10,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1705 [2020-10-29 05:24:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:24:12,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:24:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:24:12,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:12,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:24:12,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:24:12,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:24:12,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:24:12,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:24:12,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:24:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:24:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:24:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:24:12,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:24:15,419 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 05:24:15,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807504067] [2020-10-29 05:24:15,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:24:15,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:24:15,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689341442] [2020-10-29 05:24:15,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:24:15,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:24:15,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:24:15,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:24:15,455 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:24:35,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:24:35,866 INFO L93 Difference]: Finished difference Result 6316 states and 11857 transitions. [2020-10-29 05:24:35,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:24:35,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1690 [2020-10-29 05:24:35,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:24:35,941 INFO L225 Difference]: With dead ends: 6316 [2020-10-29 05:24:35,941 INFO L226 Difference]: Without dead ends: 4026 [2020-10-29 05:24:35,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:24:35,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2020-10-29 05:24:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3997. [2020-10-29 05:24:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-29 05:24:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6428 transitions. [2020-10-29 05:24:36,216 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6428 transitions. Word has length 1690 [2020-10-29 05:24:36,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:24:36,224 INFO L481 AbstractCegarLoop]: Abstraction has 3997 states and 6428 transitions. [2020-10-29 05:24:36,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:24:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6428 transitions. [2020-10-29 05:24:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1700 [2020-10-29 05:24:36,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:24:36,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:24:36,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:24:36,425 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:24:36,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:24:36,426 INFO L82 PathProgramCache]: Analyzing trace with hash -641337941, now seen corresponding path program 1 times [2020-10-29 05:24:36,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:24:36,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565583812] [2020-10-29 05:24:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:24:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:24:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:38,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:41,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:24:41,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1725 [2020-10-29 05:24:41,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:24:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-29 05:24:41,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:24:41,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:24:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:24:41,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:24:41,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1702 [2020-10-29 05:24:41,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:24:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:24:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:24:43,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:43,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:24:43,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:24:43,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:24:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:24:43,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:24:43,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:24:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:24:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:24:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:24:43,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:24:43,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:24:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:24:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:43,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:24:43,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:24:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:24:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:24:43,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:24:43,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:24:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:24:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:24:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:24:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:24:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:24:45,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565583812] [2020-10-29 05:24:45,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:24:45,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:24:45,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258254420] [2020-10-29 05:24:45,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:24:45,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:24:45,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:24:45,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:24:45,694 INFO L87 Difference]: Start difference. First operand 3997 states and 6428 transitions. Second operand 5 states. [2020-10-29 05:25:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:25:09,745 INFO L93 Difference]: Finished difference Result 11640 states and 18924 transitions. [2020-10-29 05:25:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:25:09,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1699 [2020-10-29 05:25:09,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:25:09,792 INFO L225 Difference]: With dead ends: 11640 [2020-10-29 05:25:09,792 INFO L226 Difference]: Without dead ends: 7649 [2020-10-29 05:25:09,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:25:09,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2020-10-29 05:25:09,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 7571. [2020-10-29 05:25:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7571 states. [2020-10-29 05:25:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 10962 transitions. [2020-10-29 05:25:09,986 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 10962 transitions. Word has length 1699 [2020-10-29 05:25:09,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:25:09,989 INFO L481 AbstractCegarLoop]: Abstraction has 7571 states and 10962 transitions. [2020-10-29 05:25:09,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:25:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 10962 transitions. [2020-10-29 05:25:10,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1702 [2020-10-29 05:25:10,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:25:10,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:25:10,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:25:10,068 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:25:10,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:25:10,069 INFO L82 PathProgramCache]: Analyzing trace with hash 197611943, now seen corresponding path program 1 times [2020-10-29 05:25:10,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:25:10,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983484466] [2020-10-29 05:25:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:25:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:25:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:25:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:25:15,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:25:15,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1727 [2020-10-29 05:25:15,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:25:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-29 05:25:15,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:25:15,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:25:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:25:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:25:15,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1702 [2020-10-29 05:25:15,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:25:16,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:25:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:25:16,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:25:16,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:25:16,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:25:16,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:25:16,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:25:16,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:25:16,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:25:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:25:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:25:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:25:16,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:25:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:25:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:25:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:25:16,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:25:16,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:25:16,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:25:16,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:25:16,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:25:16,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:25:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:25:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:25:16,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:25:16,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:25:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:25:19,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983484466] [2020-10-29 05:25:19,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:25:19,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:25:19,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936863814] [2020-10-29 05:25:19,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:25:19,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:25:19,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:25:19,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:25:19,879 INFO L87 Difference]: Start difference. First operand 7571 states and 10962 transitions. Second operand 6 states. [2020-10-29 05:25:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:25:53,817 INFO L93 Difference]: Finished difference Result 29229 states and 43415 transitions. [2020-10-29 05:25:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:25:53,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1701 [2020-10-29 05:25:53,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:25:53,925 INFO L225 Difference]: With dead ends: 29229 [2020-10-29 05:25:53,925 INFO L226 Difference]: Without dead ends: 21664 [2020-10-29 05:25:53,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:25:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21664 states. [2020-10-29 05:25:54,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21664 to 21629. [2020-10-29 05:25:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21629 states. [2020-10-29 05:25:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21629 states to 21629 states and 29137 transitions. [2020-10-29 05:25:54,504 INFO L78 Accepts]: Start accepts. Automaton has 21629 states and 29137 transitions. Word has length 1701 [2020-10-29 05:25:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:25:54,506 INFO L481 AbstractCegarLoop]: Abstraction has 21629 states and 29137 transitions. [2020-10-29 05:25:54,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:25:54,506 INFO L276 IsEmpty]: Start isEmpty. Operand 21629 states and 29137 transitions. [2020-10-29 05:25:54,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1768 [2020-10-29 05:25:54,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:25:54,630 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:25:54,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:25:54,630 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:25:54,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:25:54,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1754015680, now seen corresponding path program 1 times [2020-10-29 05:25:54,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:25:54,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283936394] [2020-10-29 05:25:54,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:25:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:25:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:25:58,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:00,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:26:00,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1793 [2020-10-29 05:26:00,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:26:00,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 05:26:00,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:26:00,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:26:00,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:26:00,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-29 05:26:00,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1702 [2020-10-29 05:26:00,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:26:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:26:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:26:01,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:01,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:26:01,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:26:01,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:26:01,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:26:01,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:26:01,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:26:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:26:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:26:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:26:01,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:26:01,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:26:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:26:01,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:26:01,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:26:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:26:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:26:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 05:26:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:26:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 73 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:26:04,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283936394] [2020-10-29 05:26:04,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:26:04,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:26:04,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406166508] [2020-10-29 05:26:04,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:26:04,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:26:04,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:26:04,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:26:04,407 INFO L87 Difference]: Start difference. First operand 21629 states and 29137 transitions. Second operand 6 states. [2020-10-29 05:26:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:26:28,342 INFO L93 Difference]: Finished difference Result 53847 states and 75192 transitions. [2020-10-29 05:26:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:26:28,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1767 [2020-10-29 05:26:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:26:28,471 INFO L225 Difference]: With dead ends: 53847 [2020-10-29 05:26:28,472 INFO L226 Difference]: Without dead ends: 32224 [2020-10-29 05:26:28,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:26:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32224 states. [2020-10-29 05:26:29,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32224 to 32150. [2020-10-29 05:26:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32150 states. [2020-10-29 05:26:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 45169 transitions. [2020-10-29 05:26:29,334 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 45169 transitions. Word has length 1767 [2020-10-29 05:26:29,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:26:29,336 INFO L481 AbstractCegarLoop]: Abstraction has 32150 states and 45169 transitions. [2020-10-29 05:26:29,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:26:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 45169 transitions. [2020-10-29 05:26:29,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1777 [2020-10-29 05:26:29,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:26:29,464 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:26:29,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:26:29,465 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:26:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:26:29,466 INFO L82 PathProgramCache]: Analyzing trace with hash -224580735, now seen corresponding path program 1 times [2020-10-29 05:26:29,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:26:29,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682990421] [2020-10-29 05:26:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:26:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:26:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:29,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:32,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:34,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:26:34,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1804 [2020-10-29 05:26:34,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:26:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 05:26:34,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:26:34,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:26:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:26:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 05:26:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:26:34,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:26:35,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:26:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:26:35,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:35,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:26:35,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:26:35,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:26:35,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:26:35,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:26:35,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:26:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:26:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:26:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:26:35,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:26:35,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:26:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:26:35,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:35,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:26:35,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:26:35,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:26:35,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:26:35,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:26:35,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:26:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:26:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:26:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 05:26:35,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:26:35,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:26:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:26:35,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:35,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:35,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:26:35,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 05:26:35,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:26:35,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-29 05:26:35,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:26:35,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:26:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:26:35,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:26:35,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 05:26:35,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:26:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:26:37,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682990421] [2020-10-29 05:26:37,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:26:37,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:26:37,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858625714] [2020-10-29 05:26:37,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:26:37,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:26:37,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:26:37,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:26:37,369 INFO L87 Difference]: Start difference. First operand 32150 states and 45169 transitions. Second operand 7 states. [2020-10-29 05:27:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:27:19,328 INFO L93 Difference]: Finished difference Result 84527 states and 127196 transitions. [2020-10-29 05:27:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:27:19,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1776 [2020-10-29 05:27:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:27:19,570 INFO L225 Difference]: With dead ends: 84527 [2020-10-29 05:27:19,570 INFO L226 Difference]: Without dead ends: 52383 [2020-10-29 05:27:19,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:27:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52383 states. [2020-10-29 05:27:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52383 to 52141. [2020-10-29 05:27:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52141 states. [2020-10-29 05:27:21,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52141 states to 52141 states and 72779 transitions. [2020-10-29 05:27:21,013 INFO L78 Accepts]: Start accepts. Automaton has 52141 states and 72779 transitions. Word has length 1776 [2020-10-29 05:27:21,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:27:21,014 INFO L481 AbstractCegarLoop]: Abstraction has 52141 states and 72779 transitions. [2020-10-29 05:27:21,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:27:21,014 INFO L276 IsEmpty]: Start isEmpty. Operand 52141 states and 72779 transitions. [2020-10-29 05:27:21,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1818 [2020-10-29 05:27:21,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:27:21,160 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:27:21,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:27:21,161 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:27:21,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:27:21,162 INFO L82 PathProgramCache]: Analyzing trace with hash 39348289, now seen corresponding path program 1 times [2020-10-29 05:27:21,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:27:21,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549424358] [2020-10-29 05:27:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:27:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:27:21,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:27:21,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:27:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:27:21,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:27:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking...