/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 02:07:24,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 02:07:24,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 02:07:24,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 02:07:24,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 02:07:24,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 02:07:24,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 02:07:24,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 02:07:24,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 02:07:24,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 02:07:24,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 02:07:24,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 02:07:24,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 02:07:24,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 02:07:24,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 02:07:24,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 02:07:24,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 02:07:24,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 02:07:24,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 02:07:24,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 02:07:24,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 02:07:24,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 02:07:24,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 02:07:24,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 02:07:24,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 02:07:24,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 02:07:24,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 02:07:24,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 02:07:24,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 02:07:24,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 02:07:24,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 02:07:24,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 02:07:24,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 02:07:24,532 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 02:07:24,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 02:07:24,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 02:07:24,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 02:07:24,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 02:07:24,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 02:07:24,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 02:07:24,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 02:07:24,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 02:07:24,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 02:07:24,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 02:07:24,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 02:07:24,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 02:07:24,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 02:07:24,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 02:07:24,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 02:07:24,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 02:07:24,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:07:24,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 02:07:24,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 02:07:24,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 02:07:24,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 02:07:24,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:24,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 02:07:24,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 02:07:24,539 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 02:07:24,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 02:07:24,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 02:07:24,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 02:07:24,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 02:07:24,909 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 02:07:24,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2020-07-21 02:07:24,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57c14d24/9da308b0c1db4232b3b75331797be30c/FLAG6e6be8d43 [2020-07-21 02:07:25,502 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 02:07:25,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2020-07-21 02:07:25,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57c14d24/9da308b0c1db4232b3b75331797be30c/FLAG6e6be8d43 [2020-07-21 02:07:25,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57c14d24/9da308b0c1db4232b3b75331797be30c [2020-07-21 02:07:25,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 02:07:25,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 02:07:25,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 02:07:25,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 02:07:25,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 02:07:25,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:07:25" (1/1) ... [2020-07-21 02:07:25,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ed5202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:25, skipping insertion in model container [2020-07-21 02:07:25,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:07:25" (1/1) ... [2020-07-21 02:07:25,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 02:07:25,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 02:07:26,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:07:26,378 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 02:07:26,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:07:26,481 INFO L208 MainTranslator]: Completed translation [2020-07-21 02:07:26,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:26 WrapperNode [2020-07-21 02:07:26,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 02:07:26,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 02:07:26,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 02:07:26,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 02:07:26,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:26" (1/1) ... [2020-07-21 02:07:26,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:26" (1/1) ... [2020-07-21 02:07:26,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:26" (1/1) ... [2020-07-21 02:07:26,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:26" (1/1) ... [2020-07-21 02:07:26,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:26" (1/1) ... [2020-07-21 02:07:26,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:26" (1/1) ... [2020-07-21 02:07:26,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:26" (1/1) ... [2020-07-21 02:07:26,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 02:07:26,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 02:07:26,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 02:07:26,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 02:07:26,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-21 02:07:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 02:07:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 02:07:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 02:07:26,697 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-21 02:07:26,697 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-21 02:07:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-21 02:07:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-21 02:07:26,699 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-21 02:07:26,699 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-21 02:07:26,700 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-21 02:07:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-21 02:07:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 02:07:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 02:07:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 02:07:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 02:07:26,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 02:07:26,703 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-21 02:07:26,704 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-21 02:07:26,704 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-21 02:07:26,704 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-21 02:07:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-21 02:07:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-21 02:07:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-21 02:07:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 02:07:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-21 02:07:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-21 02:07:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 02:07:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 02:07:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 02:07:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 02:07:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 02:07:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 02:07:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 02:07:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 02:07:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 02:07:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 02:07:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 02:07:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 02:07:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 02:07:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 02:07:27,649 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 02:07:27,650 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-21 02:07:27,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:07:27 BoogieIcfgContainer [2020-07-21 02:07:27,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 02:07:27,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 02:07:27,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 02:07:27,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 02:07:27,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:07:25" (1/3) ... [2020-07-21 02:07:27,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5279aa9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:07:27, skipping insertion in model container [2020-07-21 02:07:27,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:26" (2/3) ... [2020-07-21 02:07:27,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5279aa9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:07:27, skipping insertion in model container [2020-07-21 02:07:27,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:07:27" (3/3) ... [2020-07-21 02:07:27,665 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_3.c [2020-07-21 02:07:27,677 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 02:07:27,686 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 02:07:27,701 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 02:07:27,728 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 02:07:27,728 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 02:07:27,728 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 02:07:27,728 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 02:07:27,729 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 02:07:27,729 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 02:07:27,729 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 02:07:27,729 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 02:07:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-07-21 02:07:27,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-21 02:07:27,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:27,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:27,769 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:27,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:27,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1652927245, now seen corresponding path program 1 times [2020-07-21 02:07:27,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:27,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682573475] [2020-07-21 02:07:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:28,055 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:28,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:28,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:28,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:07:28,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:28,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682573475] [2020-07-21 02:07:28,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:28,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:28,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894583194] [2020-07-21 02:07:28,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:28,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:28,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:28,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:28,152 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-07-21 02:07:28,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:28,247 INFO L93 Difference]: Finished difference Result 262 states and 403 transitions. [2020-07-21 02:07:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:28,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-07-21 02:07:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:28,278 INFO L225 Difference]: With dead ends: 262 [2020-07-21 02:07:28,278 INFO L226 Difference]: Without dead ends: 140 [2020-07-21 02:07:28,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:28,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-21 02:07:28,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120. [2020-07-21 02:07:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-21 02:07:28,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2020-07-21 02:07:28,416 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 39 [2020-07-21 02:07:28,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:28,417 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2020-07-21 02:07:28,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2020-07-21 02:07:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-21 02:07:28,431 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:28,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:28,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:28,633 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:28,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:28,634 INFO L82 PathProgramCache]: Analyzing trace with hash -296822387, now seen corresponding path program 1 times [2020-07-21 02:07:28,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:28,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680557342] [2020-07-21 02:07:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:28,850 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:28,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:28,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:07:28,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:07:28,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:07:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:07:28,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680557342] [2020-07-21 02:07:28,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:07:28,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 02:07:28,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115756455] [2020-07-21 02:07:28,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 02:07:28,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:28,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 02:07:28,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 02:07:28,980 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand 6 states. [2020-07-21 02:07:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:29,268 INFO L93 Difference]: Finished difference Result 306 states and 448 transitions. [2020-07-21 02:07:29,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 02:07:29,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-07-21 02:07:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:29,272 INFO L225 Difference]: With dead ends: 306 [2020-07-21 02:07:29,273 INFO L226 Difference]: Without dead ends: 202 [2020-07-21 02:07:29,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-21 02:07:29,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-07-21 02:07:29,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 126. [2020-07-21 02:07:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-21 02:07:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 172 transitions. [2020-07-21 02:07:29,291 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 172 transitions. Word has length 41 [2020-07-21 02:07:29,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:29,291 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 172 transitions. [2020-07-21 02:07:29,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 02:07:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 172 transitions. [2020-07-21 02:07:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 02:07:29,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:29,294 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:29,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:29,510 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:29,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:29,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1573985069, now seen corresponding path program 2 times [2020-07-21 02:07:29,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:29,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202241573] [2020-07-21 02:07:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:29,701 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:29,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:29,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:29,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 02:07:29,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:29,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202241573] [2020-07-21 02:07:29,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:29,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:29,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514394326] [2020-07-21 02:07:29,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:29,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:29,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:29,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:29,723 INFO L87 Difference]: Start difference. First operand 126 states and 172 transitions. Second operand 3 states. [2020-07-21 02:07:29,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:29,739 INFO L93 Difference]: Finished difference Result 176 states and 236 transitions. [2020-07-21 02:07:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:29,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 02:07:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:29,741 INFO L225 Difference]: With dead ends: 176 [2020-07-21 02:07:29,742 INFO L226 Difference]: Without dead ends: 134 [2020-07-21 02:07:29,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:29,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-07-21 02:07:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 126. [2020-07-21 02:07:29,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-21 02:07:29,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 171 transitions. [2020-07-21 02:07:29,754 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 171 transitions. Word has length 47 [2020-07-21 02:07:29,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:29,754 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 171 transitions. [2020-07-21 02:07:29,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:29,755 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 171 transitions. [2020-07-21 02:07:29,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 02:07:29,756 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:29,757 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:29,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:29,973 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:29,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:29,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1406882848, now seen corresponding path program 1 times [2020-07-21 02:07:29,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:29,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638762281] [2020-07-21 02:07:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:30,149 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:30,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:30,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:30,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 02:07:30,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:30,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638762281] [2020-07-21 02:07:30,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:30,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:30,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021376182] [2020-07-21 02:07:30,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:30,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:30,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:30,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:30,172 INFO L87 Difference]: Start difference. First operand 126 states and 171 transitions. Second operand 3 states. [2020-07-21 02:07:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:30,213 INFO L93 Difference]: Finished difference Result 186 states and 252 transitions. [2020-07-21 02:07:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:30,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-21 02:07:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:30,216 INFO L225 Difference]: With dead ends: 186 [2020-07-21 02:07:30,216 INFO L226 Difference]: Without dead ends: 144 [2020-07-21 02:07:30,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:30,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-07-21 02:07:30,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 127. [2020-07-21 02:07:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-21 02:07:30,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 172 transitions. [2020-07-21 02:07:30,229 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 172 transitions. Word has length 48 [2020-07-21 02:07:30,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:30,229 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 172 transitions. [2020-07-21 02:07:30,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:30,229 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 172 transitions. [2020-07-21 02:07:30,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 02:07:30,231 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:30,231 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:30,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:30,446 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:30,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:30,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1601345574, now seen corresponding path program 1 times [2020-07-21 02:07:30,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:30,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305957206] [2020-07-21 02:07:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:30,897 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:07:30,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:30,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:30,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 02:07:30,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:30,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305957206] [2020-07-21 02:07:30,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:30,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:30,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284201113] [2020-07-21 02:07:30,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:30,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:30,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:30,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:30,919 INFO L87 Difference]: Start difference. First operand 127 states and 172 transitions. Second operand 3 states. [2020-07-21 02:07:30,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:30,961 INFO L93 Difference]: Finished difference Result 165 states and 219 transitions. [2020-07-21 02:07:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:30,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-21 02:07:30,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:30,963 INFO L225 Difference]: With dead ends: 165 [2020-07-21 02:07:30,963 INFO L226 Difference]: Without dead ends: 131 [2020-07-21 02:07:30,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:30,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-21 02:07:30,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-07-21 02:07:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 02:07:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 173 transitions. [2020-07-21 02:07:30,973 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 173 transitions. Word has length 53 [2020-07-21 02:07:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:30,974 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 173 transitions. [2020-07-21 02:07:30,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:30,974 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 173 transitions. [2020-07-21 02:07:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 02:07:30,975 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:30,975 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:31,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:31,189 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:31,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:31,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1437146227, now seen corresponding path program 1 times [2020-07-21 02:07:31,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:31,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513011009] [2020-07-21 02:07:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:31,738 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:07:31,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:31,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:07:31,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 02:07:31,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:07:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 02:07:31,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513011009] [2020-07-21 02:07:31,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:07:31,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 02:07:31,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384196706] [2020-07-21 02:07:31,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 02:07:31,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:31,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 02:07:31,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 02:07:31,840 INFO L87 Difference]: Start difference. First operand 128 states and 173 transitions. Second operand 6 states. [2020-07-21 02:07:31,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:31,982 INFO L93 Difference]: Finished difference Result 174 states and 234 transitions. [2020-07-21 02:07:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 02:07:31,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 02:07:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:31,985 INFO L225 Difference]: With dead ends: 174 [2020-07-21 02:07:31,985 INFO L226 Difference]: Without dead ends: 140 [2020-07-21 02:07:31,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-21 02:07:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-21 02:07:31,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-07-21 02:07:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-21 02:07:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 191 transitions. [2020-07-21 02:07:31,993 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 191 transitions. Word has length 57 [2020-07-21 02:07:31,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:31,994 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 191 transitions. [2020-07-21 02:07:31,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 02:07:31,994 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 191 transitions. [2020-07-21 02:07:31,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-21 02:07:31,995 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:31,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:32,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:32,210 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:32,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:32,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1396605122, now seen corresponding path program 2 times [2020-07-21 02:07:32,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:32,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33336083] [2020-07-21 02:07:32,213 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:32,839 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:07:32,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:32,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 02:07:32,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 02:07:32,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:32,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33336083] [2020-07-21 02:07:32,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:32,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:07:32,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932292206] [2020-07-21 02:07:32,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:07:32,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:32,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:07:32,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:07:32,874 INFO L87 Difference]: Start difference. First operand 140 states and 191 transitions. Second operand 4 states. [2020-07-21 02:07:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:32,922 INFO L93 Difference]: Finished difference Result 180 states and 238 transitions. [2020-07-21 02:07:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:07:32,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-07-21 02:07:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:32,925 INFO L225 Difference]: With dead ends: 180 [2020-07-21 02:07:32,925 INFO L226 Difference]: Without dead ends: 147 [2020-07-21 02:07:32,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:07:32,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-07-21 02:07:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-07-21 02:07:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-07-21 02:07:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 199 transitions. [2020-07-21 02:07:32,934 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 199 transitions. Word has length 69 [2020-07-21 02:07:32,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:32,934 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 199 transitions. [2020-07-21 02:07:32,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:07:32,934 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 199 transitions. [2020-07-21 02:07:32,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-21 02:07:32,936 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:32,936 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:33,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:33,152 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:33,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:33,152 INFO L82 PathProgramCache]: Analyzing trace with hash 950165009, now seen corresponding path program 1 times [2020-07-21 02:07:33,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:33,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381775184] [2020-07-21 02:07:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:33,761 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:07:33,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:33,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 02:07:33,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 02:07:33,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:07:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 02:07:33,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381775184] [2020-07-21 02:07:33,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:07:33,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-07-21 02:07:33,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631394847] [2020-07-21 02:07:33,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 02:07:33,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:33,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 02:07:33,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-21 02:07:33,963 INFO L87 Difference]: Start difference. First operand 147 states and 199 transitions. Second operand 9 states. [2020-07-21 02:07:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:34,187 INFO L93 Difference]: Finished difference Result 195 states and 256 transitions. [2020-07-21 02:07:34,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 02:07:34,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-07-21 02:07:34,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:34,190 INFO L225 Difference]: With dead ends: 195 [2020-07-21 02:07:34,190 INFO L226 Difference]: Without dead ends: 161 [2020-07-21 02:07:34,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-21 02:07:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-07-21 02:07:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-07-21 02:07:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-21 02:07:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 215 transitions. [2020-07-21 02:07:34,199 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 215 transitions. Word has length 75 [2020-07-21 02:07:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:34,199 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 215 transitions. [2020-07-21 02:07:34,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 02:07:34,200 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 215 transitions. [2020-07-21 02:07:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-07-21 02:07:34,201 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:34,201 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:34,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:34,413 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:34,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1150515746, now seen corresponding path program 1 times [2020-07-21 02:07:34,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:34,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606538739] [2020-07-21 02:07:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:36,427 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:07:36,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:36,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:36,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-07-21 02:07:36,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:36,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606538739] [2020-07-21 02:07:36,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:36,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:07:36,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186466150] [2020-07-21 02:07:36,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:07:36,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:36,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:07:36,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:07:36,481 INFO L87 Difference]: Start difference. First operand 161 states and 215 transitions. Second operand 4 states. [2020-07-21 02:07:36,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:36,504 INFO L93 Difference]: Finished difference Result 161 states and 215 transitions. [2020-07-21 02:07:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:07:36,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-07-21 02:07:36,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:36,505 INFO L225 Difference]: With dead ends: 161 [2020-07-21 02:07:36,505 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 02:07:36,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:07:36,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 02:07:36,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 02:07:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 02:07:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 02:07:36,507 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2020-07-21 02:07:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:36,508 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 02:07:36,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:07:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 02:07:36,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 02:07:36,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:36,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 02:07:37,055 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-21 02:07:37,055 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-21 02:07:37,056 INFO L271 CegarLoopResult]: At program point Id_MCDC_100ENTRY(lines 418 424) the Hoare annotation is: true [2020-07-21 02:07:37,056 INFO L271 CegarLoopResult]: At program point L422(line 422) the Hoare annotation is: true [2020-07-21 02:07:37,056 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-21 02:07:37,056 INFO L264 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: (= 0 Id_MCDC_99_~Id_MCDC_140~0) [2020-07-21 02:07:37,056 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-21 02:07:37,056 INFO L271 CegarLoopResult]: At program point Id_MCDC_99ENTRY(lines 398 417) the Hoare annotation is: true [2020-07-21 02:07:37,057 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-21 02:07:37,057 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-21 02:07:37,057 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-21 02:07:37,057 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-21 02:07:37,057 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-21 02:07:37,057 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-21 02:07:37,057 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-21 02:07:37,058 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-21 02:07:37,058 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-21 02:07:37,058 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-21 02:07:37,058 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-21 02:07:37,058 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-21 02:07:37,058 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-21 02:07:37,058 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-21 02:07:37,058 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-21 02:07:37,059 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-21 02:07:37,059 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-21 02:07:37,059 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-21 02:07:37,059 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-21 02:07:37,059 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-21 02:07:37,059 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-21 02:07:37,059 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-21 02:07:37,060 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-21 02:07:37,060 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-21 02:07:37,060 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-21 02:07:37,060 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-21 02:07:37,060 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-21 02:07:37,060 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-21 02:07:37,060 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-21 02:07:37,060 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-21 02:07:37,061 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-21 02:07:37,061 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-21 02:07:37,061 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-21 02:07:37,061 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-21 02:07:37,061 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-21 02:07:37,061 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-21 02:07:37,061 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-21 02:07:37,061 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-21 02:07:37,062 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 425 456) the Hoare annotation is: true [2020-07-21 02:07:37,062 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-21 02:07:37,062 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-21 02:07:37,062 INFO L271 CegarLoopResult]: At program point L455(line 455) the Hoare annotation is: true [2020-07-21 02:07:37,062 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-21 02:07:37,062 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:07:37,062 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 02:07:37,063 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:07:37,063 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:07:37,063 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-21 02:07:37,063 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-21 02:07:37,063 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-21 02:07:37,063 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-21 02:07:37,063 INFO L271 CegarLoopResult]: At program point Id_MCDC_97ENTRY(lines 329 397) the Hoare annotation is: true [2020-07-21 02:07:37,064 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-21 02:07:37,064 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-21 02:07:37,064 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-21 02:07:37,064 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-21 02:07:37,064 INFO L264 CegarLoopResult]: At program point L350-3(lines 350 353) the Hoare annotation is: (= 6144 Id_MCDC_97_~Id_MCDC_123~0) [2020-07-21 02:07:37,064 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-21 02:07:37,064 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-21 02:07:37,065 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-21 02:07:37,065 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-21 02:07:37,065 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-21 02:07:37,065 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-21 02:07:37,065 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-21 02:07:37,065 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-21 02:07:37,065 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-21 02:07:37,065 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-21 02:07:37,066 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-21 02:07:37,066 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-21 02:07:37,066 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-21 02:07:37,066 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 02:07:37,066 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-21 02:07:37,066 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-21 02:07:37,066 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-21 02:07:37,067 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-21 02:07:37,067 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-21 02:07:37,067 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-21 02:07:37,067 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 02:07:37,067 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 02:07:37,067 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-21 02:07:37,067 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-21 02:07:37,068 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-21 02:07:37,068 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-21 02:07:37,068 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-21 02:07:37,068 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-21 02:07:37,068 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-21 02:07:37,068 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-21 02:07:37,068 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-21 02:07:37,069 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-21 02:07:37,069 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-21 02:07:37,069 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-21 02:07:37,069 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-21 02:07:37,069 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-21 02:07:37,069 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-21 02:07:37,069 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-21 02:07:37,069 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-21 02:07:37,069 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-21 02:07:37,070 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-21 02:07:37,070 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-21 02:07:37,070 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-21 02:07:37,070 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-21 02:07:37,070 INFO L271 CegarLoopResult]: At program point L272(line 272) the Hoare annotation is: true [2020-07-21 02:07:37,070 INFO L268 CegarLoopResult]: For program point L272-1(line 272) no Hoare annotation was computed. [2020-07-21 02:07:37,070 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-21 02:07:37,070 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-21 02:07:37,071 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-21 02:07:37,071 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-21 02:07:37,071 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 02:07:37,071 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 02:07:37,071 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 02:07:37,071 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 02:07:37,071 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 02:07:37,072 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 02:07:37,072 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 02:07:37,072 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-21 02:07:37,072 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-21 02:07:37,072 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-21 02:07:37,072 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-21 02:07:37,072 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-21 02:07:37,073 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 02:07:37,073 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-21 02:07:37,073 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-21 02:07:37,073 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-21 02:07:37,073 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-21 02:07:37,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:07:37 BoogieIcfgContainer [2020-07-21 02:07:37,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 02:07:37,102 INFO L168 Benchmark]: Toolchain (without parser) took 11222.72 ms. Allocated memory was 147.8 MB in the beginning and 295.7 MB in the end (delta: 147.8 MB). Free memory was 104.8 MB in the beginning and 250.0 MB in the end (delta: -145.2 MB). Peak memory consumption was 141.6 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:37,103 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 124.0 MB in the beginning and 123.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 02:07:37,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.34 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 104.4 MB in the beginning and 175.3 MB in the end (delta: -71.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:37,105 INFO L168 Benchmark]: Boogie Preprocessor took 129.38 ms. Allocated memory is still 205.5 MB. Free memory was 175.3 MB in the beginning and 171.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:37,106 INFO L168 Benchmark]: RCFGBuilder took 1043.73 ms. Allocated memory is still 205.5 MB. Free memory was 171.5 MB in the beginning and 109.3 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:37,106 INFO L168 Benchmark]: TraceAbstraction took 9442.21 ms. Allocated memory was 205.5 MB in the beginning and 295.7 MB in the end (delta: 90.2 MB). Free memory was 108.6 MB in the beginning and 250.0 MB in the end (delta: -141.4 MB). Peak memory consumption was 87.7 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:37,110 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 124.0 MB in the beginning and 123.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 601.34 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 104.4 MB in the beginning and 175.3 MB in the end (delta: -71.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.38 ms. Allocated memory is still 205.5 MB. Free memory was 175.3 MB in the beginning and 171.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1043.73 ms. Allocated memory is still 205.5 MB. Free memory was 171.5 MB in the beginning and 109.3 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9442.21 ms. Allocated memory was 205.5 MB in the beginning and 295.7 MB in the end (delta: 90.2 MB). Free memory was 108.6 MB in the beginning and 250.0 MB in the end (delta: -141.4 MB). Peak memory consumption was 87.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 461]: 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: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 224]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 404]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 350]: Loop Invariant Derived loop invariant: 6144 == Id_MCDC_123 - InvariantResult [Line: 306]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 356]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.9s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1553 SDtfs, 259 SDslu, 3386 SDs, 0 SdLazy, 223 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 678 GetRequests, 644 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 124 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 191 PreInvPairs, 229 NumberOfFragments, 44 HoareAnnotationTreeSize, 191 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 34 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 506 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 667 ConstructedInterpolants, 0 QuantifiedInterpolants, 48651 SizeOfPredicates, 13 NumberOfNonLiveVariables, 5223 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 266/274 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...