/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/test23-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:29:46,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:29:46,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:29:46,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:29:46,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:29:46,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:29:46,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:29:46,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:29:46,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:29:46,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:29:46,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:29:46,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:29:46,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:29:46,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:29:46,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:29:46,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:29:46,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:29:46,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:29:46,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:29:46,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:29:46,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:29:46,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:29:46,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:29:46,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:29:46,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:29:46,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:29:46,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:29:46,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:29:46,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:29:46,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:29:46,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:29:46,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:29:46,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:29:46,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:29:46,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:29:46,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:29:46,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:29:46,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:29:46,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:29:46,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:29:46,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:29:46,812 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 [2020-10-14 23:29:46,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:29:46,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:29:46,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:29:46,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:29:46,845 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:29:46,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:29:46,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:29:46,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:29:46,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:29:46,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:29:46,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:29:46,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:29:46,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:29:46,847 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:29:46,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:29:46,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:29:46,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:29:46,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:29:46,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:29:46,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:29:46,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:29:46,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:29:46,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:29:46,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:29:46,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:29:46,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:29:46,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:29:46,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:29:46,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:29:46,850 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:29:47,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:29:47,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:29:47,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:29:47,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:29:47,237 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:29:47,238 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test23-2.c [2020-10-14 23:29:47,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76356c224/f469d0d2668643fbab75cb2e23c7aef0/FLAG84e6a3f7e [2020-10-14 23:29:47,818 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:29:47,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test23-2.c [2020-10-14 23:29:47,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76356c224/f469d0d2668643fbab75cb2e23c7aef0/FLAG84e6a3f7e [2020-10-14 23:29:48,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76356c224/f469d0d2668643fbab75cb2e23c7aef0 [2020-10-14 23:29:48,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:29:48,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:29:48,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:29:48,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:29:48,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:29:48,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:29:48" (1/1) ... [2020-10-14 23:29:48,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3116520e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:48, skipping insertion in model container [2020-10-14 23:29:48,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:29:48" (1/1) ... [2020-10-14 23:29:48,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:29:48,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:29:48,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:29:48,462 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:29:48,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:29:48,591 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:29:48,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:48 WrapperNode [2020-10-14 23:29:48,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:29:48,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:29:48,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:29:48,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:29:48,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:48" (1/1) ... [2020-10-14 23:29:48,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:48" (1/1) ... [2020-10-14 23:29:48,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:48" (1/1) ... [2020-10-14 23:29:48,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:48" (1/1) ... [2020-10-14 23:29:48,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:48" (1/1) ... [2020-10-14 23:29:48,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:48" (1/1) ... [2020-10-14 23:29:48,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:48" (1/1) ... [2020-10-14 23:29:48,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:29:48,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:29:48,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:29:48,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:29:48,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:48" (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 [2020-10-14 23:29:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:29:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:29:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-14 23:29:48,718 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-10-14 23:29:48,718 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-14 23:29:48,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:29:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:29:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:29:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 23:29:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 23:29:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:29:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-10-14 23:29:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 23:29:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:29:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:29:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:29:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:29:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:29:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:29:49,100 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:29:49,100 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:29:49,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:29:49 BoogieIcfgContainer [2020-10-14 23:29:49,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:29:49,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:29:49,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:29:49,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:29:49,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:29:48" (1/3) ... [2020-10-14 23:29:49,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eabf41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:29:49, skipping insertion in model container [2020-10-14 23:29:49,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:48" (2/3) ... [2020-10-14 23:29:49,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eabf41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:29:49, skipping insertion in model container [2020-10-14 23:29:49,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:29:49" (3/3) ... [2020-10-14 23:29:49,114 INFO L109 eAbstractionObserver]: Analyzing ICFG test23-2.c [2020-10-14 23:29:49,125 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:29:49,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:29:49,146 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:29:49,167 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:29:49,168 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:29:49,168 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:29:49,168 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:29:49,168 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:29:49,168 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:29:49,169 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:29:49,169 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:29:49,187 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 23:29:49,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:29:49,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:49,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:49,195 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:49,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:49,200 INFO L82 PathProgramCache]: Analyzing trace with hash -128514638, now seen corresponding path program 1 times [2020-10-14 23:29:49,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:49,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090969010] [2020-10-14 23:29:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:29:49,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 23:29:49,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:49,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 23:29:49,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:49,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:29:49,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:49,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:29:49,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:49,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:49,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:29:49,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:49,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:49,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:49,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:29:49,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:49,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:29:49,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:49,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:49,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:29:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:49,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:29:49,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:49,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090969010] [2020-10-14 23:29:49,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:29:49,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:29:49,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156862999] [2020-10-14 23:29:49,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:29:49,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:49,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:29:49,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:29:49,974 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-10-14 23:29:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:50,119 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-14 23:29:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:29:50,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-14 23:29:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:50,133 INFO L225 Difference]: With dead ends: 46 [2020-10-14 23:29:50,133 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 23:29:50,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:29:50,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 23:29:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-14 23:29:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 23:29:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-14 23:29:50,192 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 30 [2020-10-14 23:29:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:50,194 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-14 23:29:50,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:29:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-14 23:29:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:29:50,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:50,197 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:50,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:29:50,198 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:50,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:50,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1246729484, now seen corresponding path program 1 times [2020-10-14 23:29:50,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:50,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394219136] [2020-10-14 23:29:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:29:50,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-14 23:29:50,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:29:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:29:50,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:50,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:29:50,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:50,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:29:50,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:50,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:50,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:50,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:50,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 23:29:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:50,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:50,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:50,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394219136] [2020-10-14 23:29:50,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:29:50,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:29:50,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615234421] [2020-10-14 23:29:50,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:29:50,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:50,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:29:50,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:29:50,748 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2020-10-14 23:29:50,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:50,880 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-14 23:29:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:29:50,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-14 23:29:50,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:50,882 INFO L225 Difference]: With dead ends: 38 [2020-10-14 23:29:50,882 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 23:29:50,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:29:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 23:29:50,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-14 23:29:50,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 23:29:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-14 23:29:50,894 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 31 [2020-10-14 23:29:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:50,895 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-14 23:29:50,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:29:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-14 23:29:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:29:50,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:50,897 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:50,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:29:50,897 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:50,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:50,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1472168143, now seen corresponding path program 1 times [2020-10-14 23:29:50,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:50,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876028273] [2020-10-14 23:29:50,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:29:51,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 23:29:51,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:29:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:29:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:51,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:51,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:29:51,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:51,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:51,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:51,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:51,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:51,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:51,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:51,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:51,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:51,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:51,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:51,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:51,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:51,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:51,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 23:29:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:51,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:29:51,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:51,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876028273] [2020-10-14 23:29:51,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:51,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:29:51,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320843462] [2020-10-14 23:29:51,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:29:51,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:51,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:29:51,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:29:51,355 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 7 states. [2020-10-14 23:29:51,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:51,541 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-14 23:29:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:29:51,542 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-14 23:29:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:51,543 INFO L225 Difference]: With dead ends: 40 [2020-10-14 23:29:51,543 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 23:29:51,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:29:51,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 23:29:51,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-14 23:29:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:29:51,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-14 23:29:51,553 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 33 [2020-10-14 23:29:51,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:51,553 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-14 23:29:51,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:29:51,553 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-14 23:29:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:29:51,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:51,555 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:51,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:29:51,555 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:51,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1302295574, now seen corresponding path program 2 times [2020-10-14 23:29:51,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:51,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265254072] [2020-10-14 23:29:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:29:52,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:29:52,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-14 23:29:52,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:29:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:29:52,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:52,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:52,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:52,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:52,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:29:52,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:52,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:52,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:52,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:52,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:52,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:29:52,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:52,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:52,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:52,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:52,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:52,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:52,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:52,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:52,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:52,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:52,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:52,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:52,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:52,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:52,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:52,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:29:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:52,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:29:52,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:29:52,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:52,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:29:52,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:29:52,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265254072] [2020-10-14 23:29:52,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:52,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:29:52,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858019580] [2020-10-14 23:29:52,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:29:52,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:52,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:29:52,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:29:52,418 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 11 states. [2020-10-14 23:29:52,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:52,781 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-10-14 23:29:52,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:29:52,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-14 23:29:52,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:52,783 INFO L225 Difference]: With dead ends: 32 [2020-10-14 23:29:52,783 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:29:52,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:29:52,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:29:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:29:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:29:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:29:52,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-10-14 23:29:52,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:52,785 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:29:52,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:29:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:29:52,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:29:52,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:29:52,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:29:52,916 INFO L268 CegarLoopResult]: For program point initEXIT(lines 12 19) no Hoare annotation was computed. [2020-10-14 23:29:52,916 INFO L264 CegarLoopResult]: At program point initENTRY(lines 12 19) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-14 23:29:52,916 INFO L268 CegarLoopResult]: For program point initFINAL(lines 12 19) no Hoare annotation was computed. [2020-10-14 23:29:52,916 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:29:52,917 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#d1~0.offset| |old(~#d1~0.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |~#d2~0.base| |old(~#d2~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#d1~0.base| |old(~#d1~0.base)|) (= |~#d2~0.offset| |old(~#d2~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-14 23:29:52,917 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:29:52,917 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 21 24) no Hoare annotation was computed. [2020-10-14 23:29:52,917 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 21 24) the Hoare annotation is: true [2020-10-14 23:29:52,917 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-14 23:29:52,918 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 21 24) no Hoare annotation was computed. [2020-10-14 23:29:52,918 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:29:52,918 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:29:52,919 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:29:52,919 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:29:52,920 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-10-14 23:29:52,920 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 31 52) no Hoare annotation was computed. [2020-10-14 23:29:52,920 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 31 52) no Hoare annotation was computed. [2020-10-14 23:29:52,920 INFO L264 CegarLoopResult]: At program point L44(lines 32 52) the Hoare annotation is: false [2020-10-14 23:29:52,920 INFO L268 CegarLoopResult]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2020-10-14 23:29:52,921 INFO L264 CegarLoopResult]: At program point L40-3(lines 40 42) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (* 4 main_~i~0) (* 4 .cse0)) (= (+ main_~pd2~0.offset (* .cse0 4) 8) main_~pa~0.offset) (= main_~pd2~0.base main_~pa~0.base))) [2020-10-14 23:29:52,921 INFO L268 CegarLoopResult]: For program point L36(lines 36 46) no Hoare annotation was computed. [2020-10-14 23:29:52,921 INFO L264 CegarLoopResult]: At program point L40-4(lines 40 42) the Hoare annotation is: (let ((.cse0 (* 4 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)))) (and (= main_~i~0 (select (select |#memory_int| main_~pd2~0.base) (+ main_~pd2~0.offset (* main_~i~0 4) 8))) (<= (* 4 main_~i~0) .cse0) (= (+ main_~pd2~0.offset .cse0 8) main_~pa~0.offset) (= main_~pd2~0.base main_~pa~0.base))) [2020-10-14 23:29:52,921 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-10-14 23:29:52,922 INFO L268 CegarLoopResult]: For program point L36-2(lines 36 46) no Hoare annotation was computed. [2020-10-14 23:29:52,922 INFO L271 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: true [2020-10-14 23:29:52,922 INFO L268 CegarLoopResult]: For program point L34-2(line 34) no Hoare annotation was computed. [2020-10-14 23:29:52,923 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2020-10-14 23:29:52,923 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 31 52) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-14 23:29:52,923 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-10-14 23:29:52,923 INFO L268 CegarLoopResult]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2020-10-14 23:29:52,923 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 26 29) the Hoare annotation is: true [2020-10-14 23:29:52,923 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 26 29) no Hoare annotation was computed. [2020-10-14 23:29:52,923 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 26 29) no Hoare annotation was computed. [2020-10-14 23:29:52,943 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:29:52,945 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:29:52,952 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:29:52,953 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:29:52,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:29:52 BoogieIcfgContainer [2020-10-14 23:29:52,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:29:52,964 INFO L168 Benchmark]: Toolchain (without parser) took 4731.40 ms. Allocated memory was 144.7 MB in the beginning and 249.6 MB in the end (delta: 104.9 MB). Free memory was 100.4 MB in the beginning and 163.6 MB in the end (delta: -63.2 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:29:52,967 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:29:52,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.30 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 100.4 MB in the beginning and 177.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:29:52,973 INFO L168 Benchmark]: Boogie Preprocessor took 56.05 ms. Allocated memory is still 199.8 MB. Free memory was 177.8 MB in the beginning and 175.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:29:52,979 INFO L168 Benchmark]: RCFGBuilder took 456.14 ms. Allocated memory is still 199.8 MB. Free memory was 175.9 MB in the beginning and 157.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:29:52,980 INFO L168 Benchmark]: TraceAbstraction took 3850.74 ms. Allocated memory was 199.8 MB in the beginning and 249.6 MB in the end (delta: 49.8 MB). Free memory was 157.4 MB in the beginning and 163.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:29:52,992 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.30 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 100.4 MB in the beginning and 177.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.05 ms. Allocated memory is still 199.8 MB. Free memory was 177.8 MB in the beginning and 175.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.14 ms. Allocated memory is still 199.8 MB. Free memory was 175.9 MB in the beginning and 157.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3850.74 ms. Allocated memory was 199.8 MB in the beginning and 249.6 MB in the end (delta: 49.8 MB). Free memory was 157.4 MB in the beginning and 163.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant [2020-10-14 23:29:53,009 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:29:53,009 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:29:53,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:29:53,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (4 * i <= 4 * unknown-#memory_int-unknown[pa][pa] && pd2 + unknown-#memory_int-unknown[pa][pa] * 4 + 8 == pa) && pd2 == pa - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 31 SDslu, 183 SDs, 0 SdLazy, 298 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 16 PreInvPairs, 19 NumberOfFragments, 107 HoareAnnotationTreeSize, 16 FomulaSimplifications, 73 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 104 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 14888 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 18/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...