/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:50:13,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:50:13,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:50:13,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:50:13,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:50:13,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:50:13,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:50:13,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:50:13,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:50:13,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:50:13,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:50:13,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:50:13,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:50:13,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:50:13,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:50:13,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:50:13,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:50:13,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:50:13,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:50:13,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:50:13,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:50:13,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:50:13,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:50:13,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:50:13,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:50:13,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:50:13,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:50:13,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:50:13,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:50:13,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:50:13,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:50:13,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:50:13,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:50:13,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:50:13,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:50:13,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:50:13,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:50:13,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:50:13,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:50:13,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:50:13,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:50:13,180 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 [2020-09-24 21:50:13,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:50:13,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:50:13,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:50:13,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:50:13,219 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:50:13,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:50:13,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:50:13,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:50:13,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:50:13,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:50:13,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:50:13,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:50:13,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:50:13,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:50:13,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:50:13,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:50:13,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:50:13,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:50:13,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:50:13,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:50:13,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:50:13,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:50:13,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:50:13,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:50:13,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:50:13,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:50:13,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:50:13,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:50:13,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:50:13,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:50:13,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:50:13,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:50:13,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:50:13,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:50:13,816 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:50:13,818 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-24 21:50:13,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/120af107d/e00adde54d23476f96936b57804d3fa1/FLAG69e0b1bc0 [2020-09-24 21:50:14,423 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:50:14,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-24 21:50:14,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/120af107d/e00adde54d23476f96936b57804d3fa1/FLAG69e0b1bc0 [2020-09-24 21:50:14,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/120af107d/e00adde54d23476f96936b57804d3fa1 [2020-09-24 21:50:14,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:50:14,791 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:50:14,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:50:14,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:50:14,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:50:14,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:50:14" (1/1) ... [2020-09-24 21:50:14,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fcb34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:14, skipping insertion in model container [2020-09-24 21:50:14,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:50:14" (1/1) ... [2020-09-24 21:50:14,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:50:14,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:50:15,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:50:15,063 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:50:15,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:50:15,112 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:50:15,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:15 WrapperNode [2020-09-24 21:50:15,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:50:15,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:50:15,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:50:15,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:50:15,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:15" (1/1) ... [2020-09-24 21:50:15,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:15" (1/1) ... [2020-09-24 21:50:15,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:15" (1/1) ... [2020-09-24 21:50:15,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:15" (1/1) ... [2020-09-24 21:50:15,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:15" (1/1) ... [2020-09-24 21:50:15,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:15" (1/1) ... [2020-09-24 21:50:15,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:15" (1/1) ... [2020-09-24 21:50:15,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:50:15,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:50:15,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:50:15,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:50:15,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:15" (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 [2020-09-24 21:50:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:50:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:50:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:50:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:50:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:50:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 21:50:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:50:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:50:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:50:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:50:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:50:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:50:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:50:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:50:15,647 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:50:15,647 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 21:50:15,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:50:15 BoogieIcfgContainer [2020-09-24 21:50:15,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:50:15,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:50:15,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:50:15,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:50:15,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:50:14" (1/3) ... [2020-09-24 21:50:15,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c02744e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:50:15, skipping insertion in model container [2020-09-24 21:50:15,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:15" (2/3) ... [2020-09-24 21:50:15,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c02744e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:50:15, skipping insertion in model container [2020-09-24 21:50:15,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:50:15" (3/3) ... [2020-09-24 21:50:15,668 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-24 21:50:15,677 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:50:15,687 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:50:15,707 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:50:15,734 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:50:15,735 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:50:15,735 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:50:15,735 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:50:15,735 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:50:15,735 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:50:15,735 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:50:15,735 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:50:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-24 21:50:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 21:50:15,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:15,767 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] [2020-09-24 21:50:15,767 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:15,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:15,774 INFO L82 PathProgramCache]: Analyzing trace with hash 435763839, now seen corresponding path program 1 times [2020-09-24 21:50:15,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:15,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344522542] [2020-09-24 21:50:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:15,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:16,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:16,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:50:16,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:50:16,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-09-24 21:50:16,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:50:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:50:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 21:50:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:50:16,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:16,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:16,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:16,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:50:16,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:50:16,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:16,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:16,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:16,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:16,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344522542] [2020-09-24 21:50:16,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:50:16,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:50:16,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576150110] [2020-09-24 21:50:16,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:50:16,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:16,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:50:16,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:50:16,567 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-09-24 21:50:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:16,740 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2020-09-24 21:50:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:50:16,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-24 21:50:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:16,755 INFO L225 Difference]: With dead ends: 96 [2020-09-24 21:50:16,756 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 21:50:16,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:50:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 21:50:16,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-09-24 21:50:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 21:50:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-24 21:50:16,811 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 27 [2020-09-24 21:50:16,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:16,812 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-24 21:50:16,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:50:16,812 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-24 21:50:16,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 21:50:16,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:16,814 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] [2020-09-24 21:50:16,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:50:16,815 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:16,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:16,815 INFO L82 PathProgramCache]: Analyzing trace with hash 164402036, now seen corresponding path program 1 times [2020-09-24 21:50:16,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:16,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985706664] [2020-09-24 21:50:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:16,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:16,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:17,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:17,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 21:50:17,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:17,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-24 21:50:17,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:17,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:50:17,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:50:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:50:17,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:17,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:17,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:50:17,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:17,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:50:17,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:17,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:17,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985706664] [2020-09-24 21:50:17,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:50:17,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 21:50:17,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122199705] [2020-09-24 21:50:17,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:50:17,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:17,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:50:17,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:50:17,357 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 6 states. [2020-09-24 21:50:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:17,502 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2020-09-24 21:50:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:50:17,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-24 21:50:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:17,504 INFO L225 Difference]: With dead ends: 80 [2020-09-24 21:50:17,504 INFO L226 Difference]: Without dead ends: 59 [2020-09-24 21:50:17,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:50:17,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-24 21:50:17,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2020-09-24 21:50:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 21:50:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 21:50:17,515 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 34 [2020-09-24 21:50:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:17,515 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 21:50:17,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:50:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 21:50:17,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 21:50:17,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:17,517 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] [2020-09-24 21:50:17,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:50:17,518 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:17,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:17,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1692003667, now seen corresponding path program 2 times [2020-09-24 21:50:17,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:17,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87798486] [2020-09-24 21:50:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:17,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:17,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:18,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:18,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 21:50:18,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-09-24 21:50:18,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:50:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:50:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:50:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:18,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:18,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:18,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:18,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:50:18,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:18,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:50:18,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:18,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:18,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:18,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:18,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:18,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87798486] [2020-09-24 21:50:18,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:50:18,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:50:18,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902934611] [2020-09-24 21:50:18,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:50:18,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:18,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:50:18,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:50:18,474 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 8 states. [2020-09-24 21:50:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:18,676 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2020-09-24 21:50:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:50:18,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-24 21:50:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:18,678 INFO L225 Difference]: With dead ends: 87 [2020-09-24 21:50:18,678 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 21:50:18,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:50:18,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 21:50:18,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-09-24 21:50:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 21:50:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-09-24 21:50:18,689 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 41 [2020-09-24 21:50:18,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:18,689 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-09-24 21:50:18,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:50:18,689 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-09-24 21:50:18,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 21:50:18,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:18,691 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:50:18,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:50:18,692 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:18,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1226012012, now seen corresponding path program 3 times [2020-09-24 21:50:18,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:18,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653472005] [2020-09-24 21:50:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:19,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:19,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 21:50:19,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:19,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-09-24 21:50:19,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:19,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:50:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:50:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 21:50:19,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:19,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:19,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:19,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:19,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:50:19,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:19,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:50:19,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:19,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:19,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653472005] [2020-09-24 21:50:19,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:50:19,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:50:19,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105633509] [2020-09-24 21:50:19,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:50:19,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:19,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:50:19,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:50:19,860 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 10 states. [2020-09-24 21:50:20,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:20,184 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2020-09-24 21:50:20,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:50:20,185 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-09-24 21:50:20,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:20,186 INFO L225 Difference]: With dead ends: 94 [2020-09-24 21:50:20,186 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 21:50:20,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:50:20,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 21:50:20,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2020-09-24 21:50:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 21:50:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2020-09-24 21:50:20,195 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 48 [2020-09-24 21:50:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:20,195 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2020-09-24 21:50:20,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:50:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2020-09-24 21:50:20,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 21:50:20,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:20,197 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:50:20,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:50:20,198 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:20,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:20,198 INFO L82 PathProgramCache]: Analyzing trace with hash -984894925, now seen corresponding path program 4 times [2020-09-24 21:50:20,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:20,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593655358] [2020-09-24 21:50:20,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:20,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:20,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:21,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:21,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 21:50:21,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:21,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1526 [2020-09-24 21:50:21,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:50:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:50:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:50:21,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:21,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:21,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:21,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:21,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:50:21,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:21,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:50:21,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:21,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:21,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593655358] [2020-09-24 21:50:21,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:50:21,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:50:21,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750687189] [2020-09-24 21:50:21,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:50:21,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:21,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:50:21,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:50:21,986 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 12 states. [2020-09-24 21:50:22,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:22,340 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-09-24 21:50:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:50:22,341 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-09-24 21:50:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:22,342 INFO L225 Difference]: With dead ends: 101 [2020-09-24 21:50:22,343 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 21:50:22,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-09-24 21:50:22,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 21:50:22,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2020-09-24 21:50:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 21:50:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-09-24 21:50:22,352 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 55 [2020-09-24 21:50:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:22,352 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-09-24 21:50:22,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:50:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-09-24 21:50:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 21:50:22,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:22,354 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:50:22,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:50:22,354 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:22,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:22,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1891469748, now seen corresponding path program 5 times [2020-09-24 21:50:22,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:22,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890569080] [2020-09-24 21:50:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:23,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:23,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 21:50:23,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:23,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-09-24 21:50:23,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:50:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:50:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 21:50:23,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:23,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:24,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:24,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:50:24,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:24,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:50:24,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:24,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:24,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:24,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890569080] [2020-09-24 21:50:24,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:50:24,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:50:24,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587534659] [2020-09-24 21:50:24,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:50:24,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:24,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:50:24,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:50:24,016 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 14 states. [2020-09-24 21:50:24,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:24,485 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2020-09-24 21:50:24,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:50:24,485 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-09-24 21:50:24,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:24,487 INFO L225 Difference]: With dead ends: 108 [2020-09-24 21:50:24,487 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 21:50:24,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:50:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 21:50:24,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2020-09-24 21:50:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 21:50:24,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-24 21:50:24,496 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 62 [2020-09-24 21:50:24,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:24,497 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-24 21:50:24,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:50:24,497 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-24 21:50:24,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 21:50:24,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:24,499 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:50:24,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:50:24,499 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:24,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1454149869, now seen corresponding path program 6 times [2020-09-24 21:50:24,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:24,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104530164] [2020-09-24 21:50:24,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:24,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:25,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:26,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:26,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:50:26,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:26,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1895 [2020-09-24 21:50:26,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:50:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:50:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 21:50:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:26,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:26,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:50:26,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:26,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:50:26,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:26,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104530164] [2020-09-24 21:50:26,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:50:26,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 21:50:26,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311867526] [2020-09-24 21:50:26,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:50:26,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:26,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:50:26,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:50:26,745 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 16 states. [2020-09-24 21:50:27,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:27,352 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2020-09-24 21:50:27,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 21:50:27,353 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-09-24 21:50:27,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:27,355 INFO L225 Difference]: With dead ends: 115 [2020-09-24 21:50:27,355 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 21:50:27,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2020-09-24 21:50:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 21:50:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-09-24 21:50:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 21:50:27,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2020-09-24 21:50:27,372 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 69 [2020-09-24 21:50:27,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:27,373 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2020-09-24 21:50:27,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:50:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2020-09-24 21:50:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 21:50:27,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:27,375 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:50:27,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:50:27,376 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:27,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:27,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1999531820, now seen corresponding path program 7 times [2020-09-24 21:50:27,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:27,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778046772] [2020-09-24 21:50:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:30,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:30,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:50:30,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:30,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3387 [2020-09-24 21:50:30,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:50:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:50:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:50:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:31,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:31,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:31,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:31,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:50:31,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:31,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:50:31,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:31,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:31,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:31,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778046772] [2020-09-24 21:50:31,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:50:31,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 21:50:31,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465494931] [2020-09-24 21:50:31,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:50:31,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:31,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:50:31,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:50:31,137 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 18 states. [2020-09-24 21:50:31,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:31,971 INFO L93 Difference]: Finished difference Result 122 states and 125 transitions. [2020-09-24 21:50:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:50:31,972 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-09-24 21:50:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:31,973 INFO L225 Difference]: With dead ends: 122 [2020-09-24 21:50:31,973 INFO L226 Difference]: Without dead ends: 101 [2020-09-24 21:50:31,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2020-09-24 21:50:31,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-24 21:50:31,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 92. [2020-09-24 21:50:31,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 21:50:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2020-09-24 21:50:31,981 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 76 [2020-09-24 21:50:31,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:31,981 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2020-09-24 21:50:31,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:50:31,982 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2020-09-24 21:50:31,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 21:50:31,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:31,983 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:50:31,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:50:31,984 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:31,984 INFO L82 PathProgramCache]: Analyzing trace with hash 924787699, now seen corresponding path program 8 times [2020-09-24 21:50:31,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:31,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123124860] [2020-09-24 21:50:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:32,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:35,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:35,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 21:50:35,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3788 [2020-09-24 21:50:35,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:50:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:50:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 21:50:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:36,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:36,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:36,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:50:36,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:36,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:50:36,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:36,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:36,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123124860] [2020-09-24 21:50:36,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:50:36,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 21:50:36,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315131803] [2020-09-24 21:50:36,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 21:50:36,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:36,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 21:50:36,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-09-24 21:50:36,302 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 20 states. [2020-09-24 21:50:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:37,243 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2020-09-24 21:50:37,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 21:50:37,244 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 83 [2020-09-24 21:50:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:37,245 INFO L225 Difference]: With dead ends: 129 [2020-09-24 21:50:37,245 INFO L226 Difference]: Without dead ends: 108 [2020-09-24 21:50:37,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 21:50:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-24 21:50:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2020-09-24 21:50:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-24 21:50:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-09-24 21:50:37,253 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 83 [2020-09-24 21:50:37,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:37,253 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-09-24 21:50:37,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 21:50:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-09-24 21:50:37,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-24 21:50:37,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:37,255 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:50:37,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:50:37,255 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:37,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:37,256 INFO L82 PathProgramCache]: Analyzing trace with hash 691707892, now seen corresponding path program 9 times [2020-09-24 21:50:37,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:37,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122357185] [2020-09-24 21:50:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:37,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:37,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:41,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:41,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-24 21:50:41,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4425 [2020-09-24 21:50:41,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:50:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:50:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:50:41,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:42,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:42,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:42,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:50:42,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:42,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:50:42,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:42,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122357185] [2020-09-24 21:50:42,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:50:42,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 21:50:42,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562696758] [2020-09-24 21:50:42,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 21:50:42,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:42,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 21:50:42,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-09-24 21:50:42,211 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 22 states. [2020-09-24 21:50:43,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:43,457 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2020-09-24 21:50:43,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 21:50:43,457 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 90 [2020-09-24 21:50:43,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:43,458 INFO L225 Difference]: With dead ends: 136 [2020-09-24 21:50:43,459 INFO L226 Difference]: Without dead ends: 115 [2020-09-24 21:50:43,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=1420, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 21:50:43,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-24 21:50:43,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2020-09-24 21:50:43,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-24 21:50:43,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-09-24 21:50:43,466 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 90 [2020-09-24 21:50:43,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:43,467 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-09-24 21:50:43,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 21:50:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-09-24 21:50:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-24 21:50:43,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:43,469 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:50:43,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 21:50:43,469 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:43,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:43,470 INFO L82 PathProgramCache]: Analyzing trace with hash 744280275, now seen corresponding path program 10 times [2020-09-24 21:50:43,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:43,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133743917] [2020-09-24 21:50:43,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:43,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:43,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 21:50:43,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:43,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 21:50:43,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:50:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-24 21:50:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:50:43,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:43,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:43,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:43,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:43,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:50:43,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:43,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:50:43,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-09-24 21:50:43,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133743917] [2020-09-24 21:50:43,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:50:43,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:50:43,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381667074] [2020-09-24 21:50:43,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:50:43,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:43,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:50:43,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:50:43,780 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 5 states. [2020-09-24 21:50:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:43,854 INFO L93 Difference]: Finished difference Result 106 states and 107 transitions. [2020-09-24 21:50:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:50:43,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-09-24 21:50:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:43,855 INFO L225 Difference]: With dead ends: 106 [2020-09-24 21:50:43,856 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:50:43,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:50:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:50:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:50:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:50:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:50:43,859 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 97 [2020-09-24 21:50:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:43,859 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:50:43,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:50:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:50:43,860 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:50:43,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 21:50:43,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:50:43,927 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 21:50:43,927 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 21:50:43,927 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:50:43,928 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 21:50:43,928 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:50:43,928 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:50:43,928 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:50:43,928 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:50:43,928 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:50:43,928 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 21:50:43,929 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 21:50:43,929 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-24 21:50:43,929 INFO L271 CegarLoopResult]: At program point L27-2(lines 27 33) the Hoare annotation is: true [2020-09-24 21:50:43,929 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 37) no Hoare annotation was computed. [2020-09-24 21:50:43,929 INFO L271 CegarLoopResult]: At program point L27-3(lines 27 33) the Hoare annotation is: true [2020-09-24 21:50:43,929 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 21:50:43,929 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 21:50:43,929 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 21:50:43,930 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 21:50:43,930 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 21:50:43,930 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 21:50:43,930 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-24 21:50:43,930 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-24 21:50:43,930 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 21:50:43,930 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 21:50:43,930 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 21:50:43,931 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 21:50:43,931 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 21:50:43,931 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 21:50:43,931 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 21:50:43,931 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 37) no Hoare annotation was computed. [2020-09-24 21:50:43,931 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 21:50:43,931 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 37) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 21:50:43,932 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 21:50:43,933 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 21:50:43,933 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 21:50:43,933 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 21:50:43,933 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 21:50:43,933 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-09-24 21:50:43,933 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 21:50:43,933 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-24 21:50:43,933 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-24 21:50:43,934 INFO L271 CegarLoopResult]: At program point L18-6(lines 18 20) the Hoare annotation is: true [2020-09-24 21:50:43,934 INFO L268 CegarLoopResult]: For program point L18-7(lines 18 20) no Hoare annotation was computed. [2020-09-24 21:50:43,934 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 21:50:43,934 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-24 21:50:43,934 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-24 21:50:43,934 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 21:50:43,934 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-24 21:50:43,935 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-24 21:50:43,935 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-24 21:50:43,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:50:43 BoogieIcfgContainer [2020-09-24 21:50:43,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:50:43,953 INFO L168 Benchmark]: Toolchain (without parser) took 29163.52 ms. Allocated memory was 139.5 MB in the beginning and 483.4 MB in the end (delta: 343.9 MB). Free memory was 103.0 MB in the beginning and 322.9 MB in the end (delta: -219.9 MB). Peak memory consumption was 124.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:50:43,956 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:50:43,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.12 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 91.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:50:43,965 INFO L168 Benchmark]: Boogie Preprocessor took 137.46 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 179.8 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:50:43,966 INFO L168 Benchmark]: RCFGBuilder took 401.83 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 163.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:50:43,968 INFO L168 Benchmark]: TraceAbstraction took 28290.16 ms. Allocated memory was 201.9 MB in the beginning and 483.4 MB in the end (delta: 281.5 MB). Free memory was 162.3 MB in the beginning and 322.9 MB in the end (delta: -160.6 MB). Peak memory consumption was 120.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:50:43,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.12 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 91.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.46 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 179.8 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.83 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 163.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28290.16 ms. Allocated memory was 201.9 MB in the beginning and 483.4 MB in the end (delta: 281.5 MB). Free memory was 162.3 MB in the beginning and 322.9 MB in the end (delta: -160.6 MB). Peak memory consumption was 120.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28.1s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 528 SDtfs, 402 SDslu, 4033 SDs, 0 SdLazy, 3795 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 90 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 18 PreInvPairs, 30 NumberOfFragments, 19 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 682 NumberOfCodeBlocks, 682 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 671 ConstructedInterpolants, 0 QuantifiedInterpolants, 187116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 325/1210 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...