/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=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-eb0fd7c [2020-09-21 12:26:03,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:26:03,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:26:03,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:26:03,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:26:03,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:26:03,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:26:03,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:26:03,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:26:03,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:26:03,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:26:03,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:26:03,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:26:03,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:26:03,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:26:03,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:26:03,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:26:03,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:26:03,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:26:03,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:26:03,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:26:03,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:26:03,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:26:03,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:26:03,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:26:03,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:26:03,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:26:03,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:26:03,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:26:03,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:26:03,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:26:03,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:26:03,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:26:03,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:26:03,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:26:03,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:26:03,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:26:03,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:26:03,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:26:03,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:26:03,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:26:03,636 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 [2020-09-21 12:26:03,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:26:03,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:26:03,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:26:03,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:26:03,668 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:26:03,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:26:03,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:26:03,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:26:03,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:26:03,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:26:03,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:26:03,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:26:03,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:26:03,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:26:03,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:26:03,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:26:03,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:26:03,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:26:03,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:26:03,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:26:03,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:26:03,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:26:03,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:26:03,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:26:03,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:26:03,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:26:03,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:26:03,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:26:03,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:26:03,673 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:26:04,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:26:04,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:26:04,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:26:04,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:26:04,201 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:26:04,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2020-09-21 12:26:04,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05f104d14/28f3971b6f7843ac8243cc0f1c133cc4/FLAG52d804551 [2020-09-21 12:26:04,950 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:26:04,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/alt_test.i [2020-09-21 12:26:04,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05f104d14/28f3971b6f7843ac8243cc0f1c133cc4/FLAG52d804551 [2020-09-21 12:26:05,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05f104d14/28f3971b6f7843ac8243cc0f1c133cc4 [2020-09-21 12:26:05,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:26:05,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:26:05,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:26:05,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:26:05,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:26:05,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:26:05" (1/1) ... [2020-09-21 12:26:05,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f09ba47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:05, skipping insertion in model container [2020-09-21 12:26:05,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:26:05" (1/1) ... [2020-09-21 12:26:05,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:26:05,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:26:05,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:26:05,891 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:26:05,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:26:06,070 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:26:06,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:06 WrapperNode [2020-09-21 12:26:06,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:26:06,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:26:06,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:26:06,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:26:06,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:06" (1/1) ... [2020-09-21 12:26:06,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:06" (1/1) ... [2020-09-21 12:26:06,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:06" (1/1) ... [2020-09-21 12:26:06,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:06" (1/1) ... [2020-09-21 12:26:06,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:06" (1/1) ... [2020-09-21 12:26:06,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:06" (1/1) ... [2020-09-21 12:26:06,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:06" (1/1) ... [2020-09-21 12:26:06,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:26:06,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:26:06,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:26:06,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:26:06,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:06" (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 [2020-09-21 12:26:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:26:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:26:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-21 12:26:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:26:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2020-09-21 12:26:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2020-09-21 12:26:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:26:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-09-21 12:26:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-09-21 12:26:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-09-21 12:26:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-09-21 12:26:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-09-21 12:26:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-09-21 12:26:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-09-21 12:26:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-09-21 12:26:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-09-21 12:26:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-09-21 12:26:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-09-21 12:26:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-09-21 12:26:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-09-21 12:26:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-09-21 12:26:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-09-21 12:26:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-09-21 12:26:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-09-21 12:26:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-09-21 12:26:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-09-21 12:26:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-09-21 12:26:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-09-21 12:26:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-09-21 12:26:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-09-21 12:26:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-09-21 12:26:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-09-21 12:26:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-09-21 12:26:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-09-21 12:26:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-09-21 12:26:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-21 12:26:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-09-21 12:26:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-09-21 12:26:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-09-21 12:26:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-09-21 12:26:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-09-21 12:26:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-09-21 12:26:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-09-21 12:26:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-09-21 12:26:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-09-21 12:26:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:26:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-09-21 12:26:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-09-21 12:26:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-09-21 12:26:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-09-21 12:26:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-09-21 12:26:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-09-21 12:26:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-09-21 12:26:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-09-21 12:26:06,275 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-09-21 12:26:06,275 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-09-21 12:26:06,275 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-09-21 12:26:06,275 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-09-21 12:26:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-09-21 12:26:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-09-21 12:26:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-09-21 12:26:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-21 12:26:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-09-21 12:26:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-09-21 12:26:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-09-21 12:26:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-09-21 12:26:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-09-21 12:26:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-09-21 12:26:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-09-21 12:26:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-09-21 12:26:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-09-21 12:26:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-09-21 12:26:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-09-21 12:26:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-09-21 12:26:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-09-21 12:26:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-09-21 12:26:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-09-21 12:26:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-09-21 12:26:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-09-21 12:26:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-09-21 12:26:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-09-21 12:26:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-09-21 12:26:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-09-21 12:26:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-09-21 12:26:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-09-21 12:26:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-09-21 12:26:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-09-21 12:26:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-09-21 12:26:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-09-21 12:26:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-09-21 12:26:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-09-21 12:26:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-09-21 12:26:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-09-21 12:26:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-09-21 12:26:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-09-21 12:26:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-09-21 12:26:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-09-21 12:26:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-09-21 12:26:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-09-21 12:26:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-09-21 12:26:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-09-21 12:26:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-09-21 12:26:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-09-21 12:26:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-09-21 12:26:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-09-21 12:26:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-09-21 12:26:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-09-21 12:26:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-09-21 12:26:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 12:26:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 12:26:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 12:26:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 12:26:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 12:26:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 12:26:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 12:26:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 12:26:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 12:26:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 12:26:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 12:26:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 12:26:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 12:26:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 12:26:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 12:26:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 12:26:06,292 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 12:26:06,292 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 12:26:06,292 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 12:26:06,292 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 12:26:06,293 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 12:26:06,296 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 12:26:06,297 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 12:26:06,297 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 12:26:06,300 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 12:26:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 12:26:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 12:26:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 12:26:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 12:26:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 12:26:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 12:26:06,302 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 12:26:06,303 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 12:26:06,303 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 12:26:06,303 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 12:26:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 12:26:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 12:26:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 12:26:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 12:26:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 12:26:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 12:26:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 12:26:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 12:26:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 12:26:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 12:26:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 12:26:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 12:26:06,311 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 12:26:06,312 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 12:26:06,312 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 12:26:06,312 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:26:06,312 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 12:26:06,312 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 12:26:06,312 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:26:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 12:26:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 12:26:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 12:26:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 12:26:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:26:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 12:26:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 12:26:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:26:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 12:26:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 12:26:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2020-09-21 12:26:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 12:26:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 12:26:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 12:26:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 12:26:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 12:26:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 12:26:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 12:26:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 12:26:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 12:26:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 12:26:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 12:26:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 12:26:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 12:26:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 12:26:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 12:26:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 12:26:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 12:26:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 12:26:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 12:26:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 12:26:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 12:26:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 12:26:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 12:26:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 12:26:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 12:26:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 12:26:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 12:26:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 12:26:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 12:26:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 12:26:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 12:26:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 12:26:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 12:26:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 12:26:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2020-09-21 12:26:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 12:26:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-21 12:26:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2020-09-21 12:26:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2020-09-21 12:26:06,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:26:06,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:26:06,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:26:06,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:26:06,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:26:06,895 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:26:06,895 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:26:06,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:26:06 BoogieIcfgContainer [2020-09-21 12:26:06,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:26:06,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:26:06,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:26:06,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:26:06,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:26:05" (1/3) ... [2020-09-21 12:26:06,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2ff6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:26:06, skipping insertion in model container [2020-09-21 12:26:06,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:06" (2/3) ... [2020-09-21 12:26:06,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2ff6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:26:06, skipping insertion in model container [2020-09-21 12:26:06,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:26:06" (3/3) ... [2020-09-21 12:26:06,912 INFO L109 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-09-21 12:26:06,924 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:26:06,935 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:26:06,959 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:26:07,004 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:26:07,004 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:26:07,004 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:26:07,005 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:26:07,005 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:26:07,005 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:26:07,005 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:26:07,005 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:26:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-21 12:26:07,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:26:07,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:07,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:07,039 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:07,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1074821315, now seen corresponding path program 1 times [2020-09-21 12:26:07,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:07,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420194403] [2020-09-21 12:26:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:07,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:07,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:07,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:26:07,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:07,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-21 12:26:07,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:26:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:26:07,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:26:07,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:07,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:07,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:07,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:07,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:26:07,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:07,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:07,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:26:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:07,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:07,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:07,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:07,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:07,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:26:07,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:26:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:26:07,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:07,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420194403] [2020-09-21 12:26:07,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:07,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:26:07,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803099538] [2020-09-21 12:26:07,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:26:07,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:07,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:26:07,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:26:07,971 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-21 12:26:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:08,104 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-09-21 12:26:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:26:08,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-21 12:26:08,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:08,118 INFO L225 Difference]: With dead ends: 51 [2020-09-21 12:26:08,118 INFO L226 Difference]: Without dead ends: 24 [2020-09-21 12:26:08,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:26:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-21 12:26:08,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-21 12:26:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-21 12:26:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-09-21 12:26:08,170 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2020-09-21 12:26:08,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:08,171 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-09-21 12:26:08,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:26:08,171 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-09-21 12:26:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:26:08,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:08,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:08,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:26:08,173 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:08,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:08,173 INFO L82 PathProgramCache]: Analyzing trace with hash 373756737, now seen corresponding path program 1 times [2020-09-21 12:26:08,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:08,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980361819] [2020-09-21 12:26:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:08,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:08,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:26:08,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:08,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-21 12:26:08,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:26:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:26:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:26:08,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:08,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:08,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:08,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:08,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:08,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:26:08,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:08,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:08,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:08,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:08,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:26:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:08,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:08,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:08,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:08,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:26:08,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:08,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:08,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:08,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:26:08,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:08,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980361819] [2020-09-21 12:26:08,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:08,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:26:08,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29364342] [2020-09-21 12:26:08,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:26:08,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:08,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:26:08,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:26:08,410 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-09-21 12:26:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:08,530 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-09-21 12:26:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:26:08,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-21 12:26:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:08,532 INFO L225 Difference]: With dead ends: 31 [2020-09-21 12:26:08,532 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 12:26:08,534 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 [2020-09-21 12:26:08,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 12:26:08,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-21 12:26:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 12:26:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-09-21 12:26:08,543 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-09-21 12:26:08,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:08,543 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-09-21 12:26:08,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:26:08,544 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-09-21 12:26:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:26:08,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:08,545 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] [2020-09-21 12:26:08,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:26:08,546 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:08,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:08,546 INFO L82 PathProgramCache]: Analyzing trace with hash -568191789, now seen corresponding path program 1 times [2020-09-21 12:26:08,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:08,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214257504] [2020-09-21 12:26:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:08,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:08,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:09,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:09,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:26:09,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:26:09,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 985 [2020-09-21 12:26:09,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:09,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:26:09,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:26:09,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:26:09,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:09,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:09,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:09,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:09,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:09,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:26:09,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:09,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:09,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:26:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:09,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:09,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:09,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:09,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:26:09,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:09,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:26:09,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 12:26:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:09,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:09,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:09,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:09,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:09,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:26:09,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:26:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:26:09,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:09,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214257504] [2020-09-21 12:26:09,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:09,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:26:09,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162409859] [2020-09-21 12:26:09,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:26:09,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:09,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:26:09,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:26:09,834 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2020-09-21 12:26:10,122 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-09-21 12:26:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:10,310 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-09-21 12:26:10,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:26:10,311 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-21 12:26:10,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:10,312 INFO L225 Difference]: With dead ends: 40 [2020-09-21 12:26:10,312 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 12:26:10,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:26:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 12:26:10,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-21 12:26:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 12:26:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-21 12:26:10,320 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2020-09-21 12:26:10,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:10,320 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-21 12:26:10,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:26:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-21 12:26:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 12:26:10,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:10,322 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] [2020-09-21 12:26:10,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:26:10,322 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:10,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:10,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1903526385, now seen corresponding path program 1 times [2020-09-21 12:26:10,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:10,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388598024] [2020-09-21 12:26:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:26:10,340 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:26:10,340 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:26:10,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:26:10,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:26:10 BoogieIcfgContainer [2020-09-21 12:26:10,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:26:10,375 INFO L168 Benchmark]: Toolchain (without parser) took 5174.24 ms. Allocated memory was 138.9 MB in the beginning and 251.7 MB in the end (delta: 112.7 MB). Free memory was 100.5 MB in the beginning and 207.5 MB in the end (delta: -107.0 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:10,376 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-21 12:26:10,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 862.04 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 152.6 MB in the end (delta: -52.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:10,378 INFO L168 Benchmark]: Boogie Preprocessor took 75.78 ms. Allocated memory is still 202.9 MB. Free memory was 152.6 MB in the beginning and 149.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:10,379 INFO L168 Benchmark]: RCFGBuilder took 751.94 ms. Allocated memory is still 202.9 MB. Free memory was 149.5 MB in the beginning and 91.2 MB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:10,385 INFO L168 Benchmark]: TraceAbstraction took 3469.43 ms. Allocated memory was 202.9 MB in the beginning and 251.7 MB in the end (delta: 48.8 MB). Free memory was 91.2 MB in the beginning and 207.5 MB in the end (delta: -116.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:26:10,396 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 862.04 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 152.6 MB in the end (delta: -52.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.78 ms. Allocated memory is still 202.9 MB. Free memory was 152.6 MB in the beginning and 149.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 751.94 ms. Allocated memory is still 202.9 MB. Free memory was 149.5 MB in the beginning and 91.2 MB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3469.43 ms. Allocated memory was 202.9 MB in the beginning and 251.7 MB in the end (delta: 48.8 MB). Free memory was 91.2 MB in the beginning and 207.5 MB in the end (delta: -116.3 MB). There was no memory consumed. 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: 3.3s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 63 SDslu, 109 SDs, 0 SdLazy, 142 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 4890 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...