/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:42:33,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:42:33,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:42:33,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:42:33,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:42:33,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:42:33,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:42:33,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:42:33,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:42:33,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:42:33,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:42:33,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:42:33,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:42:33,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:42:33,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:42:33,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:42:33,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:42:33,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:42:33,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:42:33,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:42:33,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:42:33,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:42:33,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:42:33,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:42:33,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:42:33,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:42:33,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:42:33,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:42:33,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:42:33,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:42:33,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:42:33,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:42:33,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:42:33,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:42:33,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:42:33,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:42:33,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:42:33,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:42:33,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:42:33,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:42:33,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:42:33,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:42:33,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:42:33,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:42:33,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:42:33,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:42:33,759 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:42:33,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:42:33,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:42:33,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:42:33,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:42:33,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:42:33,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:42:33,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:42:33,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:42:33,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:42:33,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:42:33,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:42:33,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:42:33,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:42:33,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:42:33,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:42:33,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:42:33,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:42:33,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:42:33,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:42:33,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:42:33,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:42:33,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:42:33,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:42:33,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:42:33,763 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:42:34,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:42:34,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:42:34,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:42:34,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:42:34,094 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:42:34,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2020-10-12 15:42:34,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c2aefd2e/1e20f64e3d3f4b76a442d504834068ac/FLAGf72e1e360 [2020-10-12 15:42:34,739 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:42:34,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/alt_test.i [2020-10-12 15:42:34,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c2aefd2e/1e20f64e3d3f4b76a442d504834068ac/FLAGf72e1e360 [2020-10-12 15:42:35,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c2aefd2e/1e20f64e3d3f4b76a442d504834068ac [2020-10-12 15:42:35,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:42:35,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:42:35,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:42:35,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:42:35,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:42:35,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:42:35" (1/1) ... [2020-10-12 15:42:35,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d587f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:35, skipping insertion in model container [2020-10-12 15:42:35,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:42:35" (1/1) ... [2020-10-12 15:42:35,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:42:35,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:42:35,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:42:35,811 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:42:35,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:42:36,015 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:42:36,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:36 WrapperNode [2020-10-12 15:42:36,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:42:36,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:42:36,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:42:36,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:42:36,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:36" (1/1) ... [2020-10-12 15:42:36,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:36" (1/1) ... [2020-10-12 15:42:36,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:36" (1/1) ... [2020-10-12 15:42:36,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:36" (1/1) ... [2020-10-12 15:42:36,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:36" (1/1) ... [2020-10-12 15:42:36,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:36" (1/1) ... [2020-10-12 15:42:36,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:36" (1/1) ... [2020-10-12 15:42:36,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:42:36,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:42:36,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:42:36,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:42:36,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:42:36,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:42:36,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:42:36,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-12 15:42:36,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:42:36,211 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2020-10-12 15:42:36,212 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2020-10-12 15:42:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:42:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-10-12 15:42:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-10-12 15:42:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-10-12 15:42:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-10-12 15:42:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-10-12 15:42:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-10-12 15:42:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-10-12 15:42:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-10-12 15:42:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-10-12 15:42:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-10-12 15:42:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-10-12 15:42:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-10-12 15:42:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-10-12 15:42:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-10-12 15:42:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-10-12 15:42:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-10-12 15:42:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-10-12 15:42:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-10-12 15:42:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-12 15:42:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-10-12 15:42:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-10-12 15:42:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-10-12 15:42:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-10-12 15:42:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-10-12 15:42:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-10-12 15:42:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-10-12 15:42:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-10-12 15:42:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-10-12 15:42:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-12 15:42:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-10-12 15:42:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-10-12 15:42:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-10-12 15:42:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-10-12 15:42:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-10-12 15:42:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-10-12 15:42:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-10-12 15:42:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-10-12 15:42:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-10-12 15:42:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-12 15:42:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-12 15:42:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-10-12 15:42:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-10-12 15:42:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-10-12 15:42:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-12 15:42:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-10-12 15:42:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-10-12 15:42:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-10-12 15:42:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-10-12 15:42:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-10-12 15:42:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-10-12 15:42:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-10-12 15:42:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-10-12 15:42:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-10-12 15:42:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-10-12 15:42:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-12 15:42:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-10-12 15:42:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-10-12 15:42:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-10-12 15:42:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-10-12 15:42:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-10-12 15:42:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-10-12 15:42:36,226 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-10-12 15:42:36,226 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-10-12 15:42:36,227 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-10-12 15:42:36,228 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-10-12 15:42:36,228 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-10-12 15:42:36,228 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-10-12 15:42:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-10-12 15:42:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-10-12 15:42:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-10-12 15:42:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-10-12 15:42:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-10-12 15:42:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-10-12 15:42:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-10-12 15:42:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-10-12 15:42:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-10-12 15:42:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-10-12 15:42:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-10-12 15:42:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-10-12 15:42:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-10-12 15:42:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-10-12 15:42:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-10-12 15:42:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-10-12 15:42:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-10-12 15:42:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-10-12 15:42:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-10-12 15:42:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-10-12 15:42:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-10-12 15:42:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-10-12 15:42:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-10-12 15:42:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-10-12 15:42:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-10-12 15:42:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-10-12 15:42:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-10-12 15:42:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-10-12 15:42:36,234 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-10-12 15:42:36,234 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-10-12 15:42:36,234 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-10-12 15:42:36,234 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-10-12 15:42:36,234 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-10-12 15:42:36,234 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-10-12 15:42:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:42:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:42:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:42:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:42:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:42:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:42:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:42:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:42:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:42:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:42:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:42:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:42:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:42:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:42:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:42:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:42:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:42:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:42:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:42:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:42:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:42:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:42:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:42:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:42:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:42:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:42:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:42:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:42:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:42:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:42:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:42:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:42:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:42:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:42:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:42:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:42:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:42:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:42:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:42:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:42:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:42:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:42:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:42:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:42:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:42:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:42:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:42:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:42:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:42:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:42:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:42:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:42:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:42:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:42:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:42:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:42:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:42:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:42:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:42:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:42:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:42:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:42:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:42:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:42:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2020-10-12 15:42:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:42:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:42:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:42:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:42:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:42:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:42:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:42:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:42:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:42:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:42:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:42:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:42:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:42:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:42:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:42:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:42:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:42:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:42:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:42:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:42:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:42:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:42:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:42:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:42:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:42:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:42:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:42:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:42:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:42:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:42:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:42:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:42:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:42:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:42:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2020-10-12 15:42:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:42:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-12 15:42:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2020-10-12 15:42:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2020-10-12 15:42:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:42:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:42:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:42:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:42:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:42:36,788 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:42:36,789 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 15:42:36,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:42:36 BoogieIcfgContainer [2020-10-12 15:42:36,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:42:36,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:42:36,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:42:36,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:42:36,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:42:35" (1/3) ... [2020-10-12 15:42:36,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f0ec32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:42:36, skipping insertion in model container [2020-10-12 15:42:36,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:42:36" (2/3) ... [2020-10-12 15:42:36,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f0ec32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:42:36, skipping insertion in model container [2020-10-12 15:42:36,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:42:36" (3/3) ... [2020-10-12 15:42:36,818 INFO L109 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-10-12 15:42:36,829 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:42:36,837 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:42:36,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:42:36,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:42:36,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:42:36,873 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:42:36,873 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:42:36,873 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:42:36,873 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:42:36,873 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:42:36,873 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:42:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 15:42:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:42:36,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:36,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:36,896 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:36,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:36,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1074821315, now seen corresponding path program 1 times [2020-10-12 15:42:36,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:36,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749260023] [2020-10-12 15:42:36,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:37,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:37,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:37,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:37,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:42:37,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:42:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-12 15:42:37,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:42:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:42:37,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:42:37,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:42:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:42:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:37,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:37,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:37,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:37,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:42:37,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:37,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:42:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:37,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:37,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:37,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:37,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:42:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 15:42:37,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:42:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:42:37,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:42:37,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749260023] [2020-10-12 15:42:37,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:42:37,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 15:42:37,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316203784] [2020-10-12 15:42:37,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:42:37,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:42:37,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:42:37,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:42:37,775 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 10 states. [2020-10-12 15:42:38,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:38,123 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-12 15:42:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:42:38,126 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-12 15:42:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:38,139 INFO L225 Difference]: With dead ends: 63 [2020-10-12 15:42:38,139 INFO L226 Difference]: Without dead ends: 27 [2020-10-12 15:42:38,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:42:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-12 15:42:38,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-10-12 15:42:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 15:42:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-12 15:42:38,186 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2020-10-12 15:42:38,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:38,187 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-12 15:42:38,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:42:38,187 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-12 15:42:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:42:38,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:38,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:38,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:42:38,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:38,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:38,189 INFO L82 PathProgramCache]: Analyzing trace with hash 373756737, now seen corresponding path program 1 times [2020-10-12 15:42:38,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:38,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487335491] [2020-10-12 15:42:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:38,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:38,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:42:38,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:38,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 15:42:38,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:42:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:42:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:42:38,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:38,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:42:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:38,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:38,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:38,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:42:38,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:38,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:38,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:42:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:38,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:38,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:38,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:38,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:42:38,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:38,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:42:38,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:38,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 15:42:38,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:42:38,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487335491] [2020-10-12 15:42:38,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:42:38,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:42:38,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174604145] [2020-10-12 15:42:38,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:42:38,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:42:38,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:42:38,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:42:38,363 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-10-12 15:42:38,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:38,452 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-10-12 15:42:38,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:42:38,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-12 15:42:38,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:38,453 INFO L225 Difference]: With dead ends: 31 [2020-10-12 15:42:38,454 INFO L226 Difference]: Without dead ends: 27 [2020-10-12 15:42:38,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:42:38,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-12 15:42:38,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-12 15:42:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 15:42:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-12 15:42:38,462 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-10-12 15:42:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:38,462 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-12 15:42:38,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:42:38,463 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-12 15:42:38,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:42:38,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:38,464 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:38,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:42:38,464 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:38,465 INFO L82 PathProgramCache]: Analyzing trace with hash -568191789, now seen corresponding path program 1 times [2020-10-12 15:42:38,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:38,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401104075] [2020-10-12 15:42:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:38,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:38,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:39,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:39,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:42:39,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:42:39,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-10-12 15:42:39,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:42:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:42:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:42:39,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:42:39,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:42:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:39,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:39,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:39,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:42:39,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:39,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:39,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:42:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:39,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:39,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:39,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:39,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 15:42:39,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:42:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:42:39,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 15:42:39,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 15:42:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:39,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:39,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:39,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:39,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:42:39,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:42:39,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:42:39,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:42:39,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:42:39,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401104075] [2020-10-12 15:42:39,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:42:39,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 15:42:39,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551310942] [2020-10-12 15:42:39,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:42:39,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:42:39,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:42:39,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:42:39,357 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 11 states. [2020-10-12 15:42:39,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:39,584 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-12 15:42:39,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:42:39,584 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-12 15:42:39,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:39,586 INFO L225 Difference]: With dead ends: 40 [2020-10-12 15:42:39,586 INFO L226 Difference]: Without dead ends: 27 [2020-10-12 15:42:39,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:42:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-12 15:42:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-12 15:42:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 15:42:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-12 15:42:39,593 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2020-10-12 15:42:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:39,594 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-12 15:42:39,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:42:39,594 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-12 15:42:39,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:42:39,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:39,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:39,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:42:39,596 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:39,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:39,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1903526385, now seen corresponding path program 1 times [2020-10-12 15:42:39,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:39,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528366941] [2020-10-12 15:42:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:42:39,611 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:42:39,612 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:42:39,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:42:39,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:42:39 BoogieIcfgContainer [2020-10-12 15:42:39,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:42:39,640 INFO L168 Benchmark]: Toolchain (without parser) took 4540.09 ms. Allocated memory was 146.8 MB in the beginning and 246.4 MB in the end (delta: 99.6 MB). Free memory was 101.3 MB in the beginning and 153.6 MB in the end (delta: -52.4 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:42:39,641 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:42:39,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 916.91 ms. Allocated memory was 146.8 MB in the beginning and 206.6 MB in the end (delta: 59.8 MB). Free memory was 101.0 MB in the beginning and 155.8 MB in the end (delta: -54.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:42:39,643 INFO L168 Benchmark]: Boogie Preprocessor took 112.10 ms. Allocated memory is still 206.6 MB. Free memory was 155.8 MB in the beginning and 152.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:42:39,644 INFO L168 Benchmark]: RCFGBuilder took 677.75 ms. Allocated memory was 206.6 MB in the beginning and 235.4 MB in the end (delta: 28.8 MB). Free memory was 152.4 MB in the beginning and 206.9 MB in the end (delta: -54.5 MB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:42:39,645 INFO L168 Benchmark]: TraceAbstraction took 2825.17 ms. Allocated memory was 235.4 MB in the beginning and 246.4 MB in the end (delta: 11.0 MB). Free memory was 206.9 MB in the beginning and 153.6 MB in the end (delta: 53.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:42:39,651 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 916.91 ms. Allocated memory was 146.8 MB in the beginning and 206.6 MB in the end (delta: 59.8 MB). Free memory was 101.0 MB in the beginning and 155.8 MB in the end (delta: -54.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.10 ms. Allocated memory is still 206.6 MB. Free memory was 155.8 MB in the beginning and 152.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 677.75 ms. Allocated memory was 206.6 MB in the beginning and 235.4 MB in the end (delta: 28.8 MB). Free memory was 152.4 MB in the beginning and 206.9 MB in the end (delta: -54.5 MB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2825.17 ms. Allocated memory was 235.4 MB in the beginning and 246.4 MB in the end (delta: 11.0 MB). Free memory was 206.9 MB in the beginning and 153.6 MB in the end (delta: 53.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1601]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1606] int globalState = 0; [L1612] CALL, EXPR l_malloc(sizeof(int)) [L1619] void *retVal = malloc(size); [L1620] COND TRUE retVal != ((void *)0) [L1621] globalState=1 [L1622] return retVal; [L1612] RET, EXPR l_malloc(sizeof(int)) [L1612] int *a = (int*) l_malloc(sizeof(int)); [L1613] CALL l_free(a) [L1629] COND TRUE ptr!=((void *)0) [L1629] (globalState == 1) ? (0) : __blast_assert () [L1630] globalState = 0 [L1613] RET l_free(a) [L1614] CALL l_free(a) [L1629] COND TRUE ptr!=((void *)0) [L1629] (globalState == 1) ? (0) : __blast_assert () [L1629] CALL __blast_assert () [L1601] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 81 SDslu, 202 SDs, 0 SdLazy, 246 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 4680 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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 incorrect! Received shutdown request...