/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 NUM_VARIABLES --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_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 18:09:53,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 18:09:53,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 18:09:53,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 18:09:53,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 18:09:53,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 18:09:53,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 18:09:53,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 18:09:53,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 18:09:53,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 18:09:53,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 18:09:53,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 18:09:53,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 18:09:53,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 18:09:53,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 18:09:53,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 18:09:53,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 18:09:53,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 18:09:53,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 18:09:53,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 18:09:53,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 18:09:53,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 18:09:53,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 18:09:53,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 18:09:53,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 18:09:53,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 18:09:53,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 18:09:53,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 18:09:53,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 18:09:53,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-20 18:09:53,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 18:09:53,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 18:09:53,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 18:09:53,929 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 [2020-07-20 18:09:53,953 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 18:09:53,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 18:09:53,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 18:09:53,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 18:09:53,957 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 18:09:53,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 18:09:53,958 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 18:09:53,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 18:09:53,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 18:09:53,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 18:09:53,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 18:09:53,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 18:09:53,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 18:09:53,960 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 18:09:53,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 18:09:53,960 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 18:09:53,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 18:09:53,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 18:09:53,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 18:09:53,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 18:09:53,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 18:09:53,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 18:09:53,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 18:09:53,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 18:09:53,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 18:09:53,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 18:09:53,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:09:53,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 18:09:53,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 18:09:53,963 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 -> NUM_VARIABLES 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 [2020-07-20 18:09:54,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 18:09:54,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 18:09:54,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 18:09:54,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 18:09:54,437 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 18:09:54,438 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c [2020-07-20 18:09:54,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9b3316d5/9da88aea889b43c3af56178c4a3dcdeb/FLAG285600794 [2020-07-20 18:09:55,591 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 18:09:55,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c [2020-07-20 18:09:55,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9b3316d5/9da88aea889b43c3af56178c4a3dcdeb/FLAG285600794 [2020-07-20 18:09:55,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9b3316d5/9da88aea889b43c3af56178c4a3dcdeb [2020-07-20 18:09:55,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 18:09:55,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 18:09:55,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 18:09:55,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 18:09:55,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 18:09:55,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:09:55" (1/1) ... [2020-07-20 18:09:55,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cc5e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:09:55, skipping insertion in model container [2020-07-20 18:09:55,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:09:55" (1/1) ... [2020-07-20 18:09:55,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 18:09:55,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 18:09:56,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:09:56,541 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 18:09:56,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:09:56,705 INFO L208 MainTranslator]: Completed translation [2020-07-20 18:09:56,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:09:56 WrapperNode [2020-07-20 18:09:56,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 18:09:56,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 18:09:56,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 18:09:56,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 18:09:56,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:09:56" (1/1) ... [2020-07-20 18:09:56,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:09:56" (1/1) ... [2020-07-20 18:09:56,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:09:56" (1/1) ... [2020-07-20 18:09:56,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:09:56" (1/1) ... [2020-07-20 18:09:56,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:09:56" (1/1) ... [2020-07-20 18:09:56,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:09:56" (1/1) ... [2020-07-20 18:09:56,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:09:56" (1/1) ... [2020-07-20 18:09:56,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 18:09:56,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 18:09:56,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 18:09:56,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 18:09:56,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:09:56" (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 [2020-07-20 18:09:57,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 18:09:57,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 18:09:57,002 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 18:09:57,003 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-20 18:09:57,003 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_107 [2020-07-20 18:09:57,004 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_110 [2020-07-20 18:09:57,005 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_113 [2020-07-20 18:09:57,005 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_114 [2020-07-20 18:09:57,005 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_115 [2020-07-20 18:09:57,005 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_117 [2020-07-20 18:09:57,005 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_118 [2020-07-20 18:09:57,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 18:09:57,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 18:09:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 18:09:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 18:09:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 18:09:57,007 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-20 18:09:57,007 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-20 18:09:57,007 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_107 [2020-07-20 18:09:57,008 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_110 [2020-07-20 18:09:57,008 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_113 [2020-07-20 18:09:57,008 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_114 [2020-07-20 18:09:57,008 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_115 [2020-07-20 18:09:57,009 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 18:09:57,009 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_117 [2020-07-20 18:09:57,009 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_118 [2020-07-20 18:09:57,009 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-20 18:09:57,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 18:09:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 18:09:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 18:09:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 18:09:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 18:09:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 18:09:57,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 18:09:57,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 18:09:57,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 18:09:57,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 18:09:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 18:09:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 18:09:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 18:09:58,996 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 18:09:58,997 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-20 18:09:59,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:09:59 BoogieIcfgContainer [2020-07-20 18:09:59,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 18:09:59,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 18:09:59,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 18:09:59,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 18:09:59,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:09:55" (1/3) ... [2020-07-20 18:09:59,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14de4395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:09:59, skipping insertion in model container [2020-07-20 18:09:59,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:09:56" (2/3) ... [2020-07-20 18:09:59,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14de4395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:09:59, skipping insertion in model container [2020-07-20 18:09:59,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:09:59" (3/3) ... [2020-07-20 18:09:59,044 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_1.c [2020-07-20 18:09:59,066 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 18:09:59,083 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 18:09:59,108 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 18:09:59,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 18:09:59,155 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 18:09:59,156 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 18:09:59,156 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 18:09:59,156 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 18:09:59,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 18:09:59,157 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 18:09:59,157 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 18:09:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-07-20 18:09:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 18:09:59,212 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:09:59,215 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] [2020-07-20 18:09:59,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:09:59,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:09:59,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1921771477, now seen corresponding path program 1 times [2020-07-20 18:09:59,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:09:59,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568752305] [2020-07-20 18:09:59,245 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 [2020-07-20 18:09:59,637 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 18:09:59,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:09:59,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 18:09:59,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:09:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:09:59,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:09:59,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568752305] [2020-07-20 18:09:59,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:09:59,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 18:09:59,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714203070] [2020-07-20 18:09:59,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 18:09:59,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:09:59,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 18:09:59,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 18:09:59,813 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 4 states. [2020-07-20 18:10:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:10:00,026 INFO L93 Difference]: Finished difference Result 251 states and 378 transitions. [2020-07-20 18:10:00,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 18:10:00,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-07-20 18:10:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:10:00,057 INFO L225 Difference]: With dead ends: 251 [2020-07-20 18:10:00,058 INFO L226 Difference]: Without dead ends: 125 [2020-07-20 18:10:00,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 18:10:00,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-20 18:10:00,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-07-20 18:10:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-20 18:10:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 172 transitions. [2020-07-20 18:10:00,185 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 172 transitions. Word has length 38 [2020-07-20 18:10:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:10:00,187 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 172 transitions. [2020-07-20 18:10:00,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 18:10:00,188 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 172 transitions. [2020-07-20 18:10:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 18:10:00,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:10:00,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:10:00,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:10:00,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:10:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:10:00,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1109798807, now seen corresponding path program 1 times [2020-07-20 18:10:00,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:10:00,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573644678] [2020-07-20 18:10:00,412 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 [2020-07-20 18:10:00,693 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 18:10:00,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:10:00,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 18:10:00,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:10:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:10:00,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:10:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:10:00,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573644678] [2020-07-20 18:10:00,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:10:00,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-07-20 18:10:00,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571064227] [2020-07-20 18:10:00,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 18:10:00,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:10:00,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 18:10:00,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-20 18:10:00,988 INFO L87 Difference]: Start difference. First operand 125 states and 172 transitions. Second operand 10 states. [2020-07-20 18:10:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:10:01,805 INFO L93 Difference]: Finished difference Result 210 states and 281 transitions. [2020-07-20 18:10:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 18:10:01,806 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-07-20 18:10:01,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:10:01,814 INFO L225 Difference]: With dead ends: 210 [2020-07-20 18:10:01,815 INFO L226 Difference]: Without dead ends: 179 [2020-07-20 18:10:01,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-07-20 18:10:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-07-20 18:10:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 161. [2020-07-20 18:10:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-20 18:10:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 217 transitions. [2020-07-20 18:10:01,915 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 217 transitions. Word has length 42 [2020-07-20 18:10:01,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:10:01,916 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 217 transitions. [2020-07-20 18:10:01,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 18:10:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 217 transitions. [2020-07-20 18:10:01,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 18:10:01,933 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:10:01,933 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:10:02,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:10:02,135 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:10:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:10:02,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1449854628, now seen corresponding path program 1 times [2020-07-20 18:10:02,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:10:02,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54094388] [2020-07-20 18:10:02,140 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 [2020-07-20 18:10:02,450 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:10:02,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:10:02,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 18:10:02,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:10:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:10:02,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:10:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:10:02,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54094388] [2020-07-20 18:10:02,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:10:02,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-20 18:10:02,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714151646] [2020-07-20 18:10:02,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 18:10:02,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:10:02,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 18:10:02,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-07-20 18:10:02,838 INFO L87 Difference]: Start difference. First operand 161 states and 217 transitions. Second operand 13 states. [2020-07-20 18:10:03,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:10:03,169 INFO L93 Difference]: Finished difference Result 198 states and 259 transitions. [2020-07-20 18:10:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 18:10:03,170 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-07-20 18:10:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:10:03,173 INFO L225 Difference]: With dead ends: 198 [2020-07-20 18:10:03,173 INFO L226 Difference]: Without dead ends: 165 [2020-07-20 18:10:03,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-07-20 18:10:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-07-20 18:10:03,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2020-07-20 18:10:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-20 18:10:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 216 transitions. [2020-07-20 18:10:03,206 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 216 transitions. Word has length 48 [2020-07-20 18:10:03,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:10:03,207 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 216 transitions. [2020-07-20 18:10:03,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 18:10:03,207 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 216 transitions. [2020-07-20 18:10:03,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 18:10:03,211 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:10:03,211 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 18:10:03,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:10:03,428 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:10:03,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:10:03,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2116640983, now seen corresponding path program 2 times [2020-07-20 18:10:03,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:10:03,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976390332] [2020-07-20 18:10:03,430 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 [2020-07-20 18:10:03,722 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:10:03,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:10:03,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 18:10:03,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:10:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 18:10:03,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:10:03,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976390332] [2020-07-20 18:10:03,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:10:03,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:10:03,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946921946] [2020-07-20 18:10:03,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:10:03,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:10:03,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:10:03,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:10:03,754 INFO L87 Difference]: Start difference. First operand 161 states and 216 transitions. Second operand 3 states. [2020-07-20 18:10:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:10:03,812 INFO L93 Difference]: Finished difference Result 328 states and 450 transitions. [2020-07-20 18:10:03,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:10:03,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-20 18:10:03,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:10:03,818 INFO L225 Difference]: With dead ends: 328 [2020-07-20 18:10:03,819 INFO L226 Difference]: Without dead ends: 182 [2020-07-20 18:10:03,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:10:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-07-20 18:10:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 162. [2020-07-20 18:10:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-07-20 18:10:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 217 transitions. [2020-07-20 18:10:03,848 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 217 transitions. Word has length 46 [2020-07-20 18:10:03,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:10:03,849 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 217 transitions. [2020-07-20 18:10:03,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:10:03,849 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 217 transitions. [2020-07-20 18:10:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 18:10:03,852 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:10:03,852 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 18:10:04,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:10:04,069 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:10:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:10:04,070 INFO L82 PathProgramCache]: Analyzing trace with hash -976651339, now seen corresponding path program 1 times [2020-07-20 18:10:04,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:10:04,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525615358] [2020-07-20 18:10:04,072 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 [2020-07-20 18:10:04,336 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:10:04,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:10:04,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 18:10:04,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:10:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 18:10:04,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:10:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 18:10:04,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525615358] [2020-07-20 18:10:04,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:10:04,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-20 18:10:04,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619242668] [2020-07-20 18:10:04,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 18:10:04,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:10:04,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 18:10:04,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-20 18:10:04,461 INFO L87 Difference]: Start difference. First operand 162 states and 217 transitions. Second operand 6 states. [2020-07-20 18:10:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:10:04,822 INFO L93 Difference]: Finished difference Result 390 states and 550 transitions. [2020-07-20 18:10:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 18:10:04,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-07-20 18:10:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:10:04,827 INFO L225 Difference]: With dead ends: 390 [2020-07-20 18:10:04,828 INFO L226 Difference]: Without dead ends: 244 [2020-07-20 18:10:04,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-20 18:10:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-07-20 18:10:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 168. [2020-07-20 18:10:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-20 18:10:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 223 transitions. [2020-07-20 18:10:04,853 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 223 transitions. Word has length 48 [2020-07-20 18:10:04,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:10:04,854 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 223 transitions. [2020-07-20 18:10:04,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 18:10:04,855 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 223 transitions. [2020-07-20 18:10:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-20 18:10:04,857 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:10:04,858 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 18:10:05,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:10:05,073 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:10:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:10:05,074 INFO L82 PathProgramCache]: Analyzing trace with hash -380252337, now seen corresponding path program 2 times [2020-07-20 18:10:05,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:10:05,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956116935] [2020-07-20 18:10:05,076 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 [2020-07-20 18:10:05,632 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:10:05,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:10:05,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 18:10:05,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:10:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-20 18:10:05,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:10:05,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956116935] [2020-07-20 18:10:05,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:10:05,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:10:05,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918957010] [2020-07-20 18:10:05,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:10:05,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:10:05,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:10:05,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:10:05,727 INFO L87 Difference]: Start difference. First operand 168 states and 223 transitions. Second operand 3 states. [2020-07-20 18:10:05,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:10:05,785 INFO L93 Difference]: Finished difference Result 260 states and 338 transitions. [2020-07-20 18:10:05,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:10:05,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-07-20 18:10:05,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:10:05,793 INFO L225 Difference]: With dead ends: 260 [2020-07-20 18:10:05,794 INFO L226 Difference]: Without dead ends: 176 [2020-07-20 18:10:05,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:10:05,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-07-20 18:10:05,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 168. [2020-07-20 18:10:05,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-20 18:10:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 222 transitions. [2020-07-20 18:10:05,831 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 222 transitions. Word has length 54 [2020-07-20 18:10:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:10:05,831 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 222 transitions. [2020-07-20 18:10:05,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:10:05,832 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 222 transitions. [2020-07-20 18:10:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 18:10:05,834 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:10:05,835 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 18:10:06,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:10:06,050 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:10:06,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:10:06,051 INFO L82 PathProgramCache]: Analyzing trace with hash 635919377, now seen corresponding path program 1 times [2020-07-20 18:10:06,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:10:06,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343217927] [2020-07-20 18:10:06,052 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 [2020-07-20 18:10:06,496 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:10:06,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:10:06,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 18:10:06,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:10:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-20 18:10:06,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:10:06,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343217927] [2020-07-20 18:10:06,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:10:06,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:10:06,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548019939] [2020-07-20 18:10:06,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:10:06,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:10:06,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:10:06,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:10:06,542 INFO L87 Difference]: Start difference. First operand 168 states and 222 transitions. Second operand 3 states. [2020-07-20 18:10:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:10:06,597 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-07-20 18:10:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:10:06,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-20 18:10:06,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:10:06,604 INFO L225 Difference]: With dead ends: 270 [2020-07-20 18:10:06,604 INFO L226 Difference]: Without dead ends: 186 [2020-07-20 18:10:06,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:10:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-07-20 18:10:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 169. [2020-07-20 18:10:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-07-20 18:10:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 223 transitions. [2020-07-20 18:10:06,625 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 223 transitions. Word has length 55 [2020-07-20 18:10:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:10:06,626 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 223 transitions. [2020-07-20 18:10:06,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:10:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 223 transitions. [2020-07-20 18:10:06,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-20 18:10:06,629 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:10:06,630 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 18:10:06,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:10:06,845 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:10:06,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:10:06,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1836507152, now seen corresponding path program 1 times [2020-07-20 18:10:06,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:10:06,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838693322] [2020-07-20 18:10:06,848 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 [2020-07-20 18:10:08,047 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:10:08,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:10:08,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 55 conjunts are in the unsatisfiable core [2020-07-20 18:10:08,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:10:08,873 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 44 [2020-07-20 18:10:08,875 INFO L350 Elim1Store]: treesize reduction 916, result has 8.4 percent of original size [2020-07-20 18:10:08,875 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 9 case distinctions, treesize of input 189 treesize of output 240 [2020-07-20 18:10:08,878 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 18:10:09,074 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-07-20 18:10:09,076 INFO L624 ElimStorePlain]: treesize reduction 123, result has 47.4 percent of original size [2020-07-20 18:10:09,089 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,101 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,107 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,113 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,119 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,123 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,128 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,138 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,149 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,159 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,174 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,185 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,199 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,209 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,213 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,224 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,234 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,236 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,246 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,263 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,267 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,271 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,275 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,280 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,284 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,288 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,292 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,296 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,300 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,304 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,308 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,312 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,315 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,319 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,322 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,326 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,330 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,334 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,338 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,341 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,345 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,348 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,351 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,355 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,363 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,371 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,374 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,380 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,385 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,389 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,396 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,399 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,408 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,412 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,415 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,417 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,421 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,424 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,427 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,432 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,436 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,440 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,443 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,446 INFO L544 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2020-07-20 18:10:09,448 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:66, output treesize:111 [2020-07-20 18:10:09,455 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,460 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,462 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,465 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,468 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,470 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,472 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,475 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,477 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,480 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,482 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,485 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,488 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,490 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,493 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,496 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,499 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,501 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,503 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,506 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,508 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,511 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,513 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,516 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,519 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,521 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,524 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,527 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,530 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,532 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,534 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,537 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,539 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,541 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,544 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,546 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,548 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,551 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,553 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,555 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,558 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,560 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,562 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,564 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,566 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,569 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,571 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,573 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,575 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,577 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,580 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,582 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,584 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,586 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,589 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,591 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,593 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,595 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,597 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,599 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,600 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,601 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,603 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,663 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,667 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,681 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,685 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,692 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,695 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,698 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,701 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,706 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,709 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,712 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,715 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,718 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,721 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,724 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,727 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,738 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,741 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,745 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,749 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,752 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,755 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,758 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,762 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,765 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,768 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,771 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,774 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,777 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,780 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,784 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,787 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,791 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,794 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,797 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,800 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,802 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,804 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,806 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,808 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,811 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,812 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,814 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,815 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,817 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,820 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,823 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,826 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,829 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,832 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,835 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,838 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,841 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,844 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,848 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,851 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,854 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,857 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,860 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,862 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,865 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,869 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:09,871 INFO L501 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-07-20 18:10:12,891 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 17 [2020-07-20 18:10:12,905 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 18:10:12,916 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 18:10:12,986 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 18:10:12,987 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 53 [2020-07-20 18:10:12,989 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 18:10:13,044 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 18:10:13,046 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 53 [2020-07-20 18:10:13,050 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 18:10:13,112 INFO L624 ElimStorePlain]: treesize reduction 57, result has 43.6 percent of original size [2020-07-20 18:10:13,138 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2020-07-20 18:10:13,139 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 18:10:13,157 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 18:10:13,159 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 18:10:13,159 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:113, output treesize:17 [2020-07-20 18:10:13,198 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-07-20 18:10:13,200 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 18:10:13,207 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 18:10:13,208 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 18:10:13,209 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-20 18:10:15,236 WARN L860 $PredicateComparison]: unable to prove that (exists ((Id_MCDC_115_~Id_MCDC_150~0 Int)) (= (store |c_old(#memory_int)| |c_~#Id_MCDC_130~0.base| (let ((.cse0 (mod Id_MCDC_115_~Id_MCDC_150~0 256))) (store (select |c_old(#memory_int)| |c_~#Id_MCDC_130~0.base|) (+ (* .cse0 4) |c_~#Id_MCDC_130~0.offset|) (+ .cse0 6656)))) |c_#memory_int|)) is different from true [2020-07-20 18:10:17,265 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_prenex_1 Int) (Id_MCDC_115_~Id_MCDC_150~0 Int)) (= (store |c_old(#memory_int)| |c_~#Id_MCDC_130~0.base| (let ((.cse1 (mod Id_MCDC_115_~Id_MCDC_150~0 256))) (store (let ((.cse0 (mod v_prenex_1 256))) (store (select |c_old(#memory_int)| |c_~#Id_MCDC_130~0.base|) (+ (* .cse0 4) |c_~#Id_MCDC_130~0.offset|) (+ .cse0 6656))) (+ (* .cse1 4) |c_~#Id_MCDC_130~0.offset|) (+ .cse1 6656)))) |c_#memory_int|)) is different from true [2020-07-20 18:10:19,293 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_prenex_2 Int) (v_prenex_1 Int) (Id_MCDC_115_~Id_MCDC_150~0 Int)) (= (store |c_old(#memory_int)| |c_~#Id_MCDC_130~0.base| (let ((.cse2 (mod Id_MCDC_115_~Id_MCDC_150~0 256))) (store (let ((.cse1 (mod v_prenex_2 256))) (store (let ((.cse0 (mod v_prenex_1 256))) (store (select |c_old(#memory_int)| |c_~#Id_MCDC_130~0.base|) (+ (* .cse0 4) |c_~#Id_MCDC_130~0.offset|) (+ .cse0 6656))) (+ (* .cse1 4) |c_~#Id_MCDC_130~0.offset|) (+ .cse1 6656))) (+ (* .cse2 4) |c_~#Id_MCDC_130~0.offset|) (+ .cse2 6656)))) |c_#memory_int|)) is different from true [2020-07-20 18:10:21,308 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (Id_MCDC_115_~Id_MCDC_150~0 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_~#Id_MCDC_130~0.base| (let ((.cse3 (mod Id_MCDC_115_~Id_MCDC_150~0 256))) (store (let ((.cse2 (mod v_prenex_3 256))) (store (let ((.cse1 (mod v_prenex_2 256))) (store (let ((.cse0 (mod v_prenex_1 256))) (store (select |c_old(#memory_int)| |c_~#Id_MCDC_130~0.base|) (+ (* .cse0 4) |c_~#Id_MCDC_130~0.offset|) (+ .cse0 6656))) (+ (* .cse1 4) |c_~#Id_MCDC_130~0.offset|) (+ .cse1 6656))) (+ (* .cse2 4) |c_~#Id_MCDC_130~0.offset|) (+ .cse2 6656))) (+ (* .cse3 4) |c_~#Id_MCDC_130~0.offset|) (+ .cse3 6656)))))) is different from true [2020-07-20 18:10:21,506 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2020-07-20 18:10:21,508 INFO L350 Elim1Store]: treesize reduction 357, result has 12.7 percent of original size [2020-07-20 18:10:21,508 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 69 [2020-07-20 18:10:21,509 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 18:10:21,566 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 18:10:21,569 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-20 18:10:21,571 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:60, output treesize:69 [2020-07-20 18:10:27,814 WARN L193 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-07-20 18:10:28,051 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2020-07-20 18:10:28,053 INFO L350 Elim1Store]: treesize reduction 357, result has 12.7 percent of original size [2020-07-20 18:10:28,054 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 81 [2020-07-20 18:10:28,056 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 18:10:28,101 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 18:10:28,107 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-07-20 18:10:28,108 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:77, output treesize:85 [2020-07-20 18:10:29,468 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-20 18:10:29,470 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 18:10:29,471 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 155 [2020-07-20 18:10:29,474 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 18:10:29,506 INFO L624 ElimStorePlain]: treesize reduction 168, result has 4.5 percent of original size [2020-07-20 18:10:29,508 INFO L544 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 18:10:29,508 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:87, output treesize:3 [2020-07-20 18:10:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2020-07-20 18:10:29,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:10:43,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838693322] [2020-07-20 18:10:43,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 18:10:43,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-07-20 18:10:43,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802138502] [2020-07-20 18:10:43,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 18:10:43,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:10:43,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 18:10:43,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=740, Unknown=10, NotChecked=228, Total=1056 [2020-07-20 18:10:43,208 INFO L87 Difference]: Start difference. First operand 169 states and 223 transitions. Second operand 22 states. [2020-07-20 18:11:31,738 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-07-20 18:11:31,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:11:31,945 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:137) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:759) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:672) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:471) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 31 more [2020-07-20 18:11:31,965 INFO L168 Benchmark]: Toolchain (without parser) took 96241.42 ms. Allocated memory was 141.6 MB in the beginning and 340.8 MB in the end (delta: 199.2 MB). Free memory was 96.9 MB in the beginning and 83.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 212.3 MB. Max. memory is 7.1 GB. [2020-07-20 18:11:31,970 INFO L168 Benchmark]: CDTParser took 1.28 ms. Allocated memory is still 141.6 MB. Free memory was 116.5 MB in the beginning and 116.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 18:11:31,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 985.72 ms. Allocated memory was 141.6 MB in the beginning and 200.3 MB in the end (delta: 58.7 MB). Free memory was 96.5 MB in the beginning and 170.3 MB in the end (delta: -73.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-20 18:11:31,979 INFO L168 Benchmark]: Boogie Preprocessor took 142.38 ms. Allocated memory is still 200.3 MB. Free memory was 170.3 MB in the beginning and 166.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-20 18:11:31,980 INFO L168 Benchmark]: RCFGBuilder took 2168.64 ms. Allocated memory is still 200.3 MB. Free memory was 166.2 MB in the beginning and 103.3 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2020-07-20 18:11:31,981 INFO L168 Benchmark]: TraceAbstraction took 92931.11 ms. Allocated memory was 200.3 MB in the beginning and 340.8 MB in the end (delta: 140.5 MB). Free memory was 102.6 MB in the beginning and 83.8 MB in the end (delta: 18.8 MB). Peak memory consumption was 159.3 MB. Max. memory is 7.1 GB. [2020-07-20 18:11:31,990 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.28 ms. Allocated memory is still 141.6 MB. Free memory was 116.5 MB in the beginning and 116.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 985.72 ms. Allocated memory was 141.6 MB in the beginning and 200.3 MB in the end (delta: 58.7 MB). Free memory was 96.5 MB in the beginning and 170.3 MB in the end (delta: -73.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.38 ms. Allocated memory is still 200.3 MB. Free memory was 170.3 MB in the beginning and 166.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2168.64 ms. Allocated memory is still 200.3 MB. Free memory was 166.2 MB in the beginning and 103.3 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 92931.11 ms. Allocated memory was 200.3 MB in the beginning and 340.8 MB in the end (delta: 140.5 MB). Free memory was 102.6 MB in the beginning and 83.8 MB in the end (delta: 18.8 MB). Peak memory consumption was 159.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...