/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_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:01:56,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:01:56,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:01:56,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:01:56,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:01:56,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:01:56,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:01:56,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:01:56,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:01:56,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:01:56,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:01:56,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:01:56,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:01:56,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:01:56,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:01:56,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:01:56,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:01:56,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:01:56,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:01:56,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:01:56,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:01:56,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:01:56,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:01:56,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:01:56,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 14:01:56,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 14:01:56,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 14:01:56,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 14:01:56,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 14:01:56,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-21 14:01:56,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:01:56,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:01:56,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:01:56,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 14:01:56,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:01:56,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:01:56,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:01:56,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:01:56,089 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:01:56,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:01:56,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:01:56,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:01:56,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:01:56,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:01:56,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:01:56,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:01:56,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:01:56,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:01:56,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:01:56,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:01:56,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:01:56,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:01:56,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:01:56,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:01:56,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:01:56,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:01:56,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:01:56,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:01:56,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:01:56,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:01:56,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:01:56,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:01:56,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:01:56,096 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_FUNCTIONS 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 -> 2 [2020-07-21 14:01:56,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:01:56,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:01:56,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:01:56,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:01:56,421 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:01:56,422 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-07-21 14:01:56,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238e64639/32144c7e65b247c5b01fe0766b7107bd/FLAGd6c8dd84a [2020-07-21 14:01:57,066 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:01:57,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-07-21 14:01:57,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238e64639/32144c7e65b247c5b01fe0766b7107bd/FLAGd6c8dd84a [2020-07-21 14:01:57,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238e64639/32144c7e65b247c5b01fe0766b7107bd [2020-07-21 14:01:57,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:01:57,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:01:57,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:01:57,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:01:57,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:01:57,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:01:57" (1/1) ... [2020-07-21 14:01:57,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e552092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:01:57, skipping insertion in model container [2020-07-21 14:01:57,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:01:57" (1/1) ... [2020-07-21 14:01:57,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:01:57,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:01:57,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:01:57,782 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:01:57,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:01:57,958 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:01:57,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:01:57 WrapperNode [2020-07-21 14:01:57,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:01:57,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:01:57,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:01:57,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:01:57,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:01:57" (1/1) ... [2020-07-21 14:01:57,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:01:57" (1/1) ... [2020-07-21 14:01:57,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:01:57" (1/1) ... [2020-07-21 14:01:57,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:01:57" (1/1) ... [2020-07-21 14:01:58,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:01:57" (1/1) ... [2020-07-21 14:01:58,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:01:57" (1/1) ... [2020-07-21 14:01:58,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:01:57" (1/1) ... [2020-07-21 14:01:58,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:01:58,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:01:58,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:01:58,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:01:58,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:01:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:01:58,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:01:58,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:01:58,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:01:58,088 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-07-21 14:01:58,089 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-07-21 14:01:58,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:01:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:01:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 14:01:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:01:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-07-21 14:01:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-07-21 14:01:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-07-21 14:01:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-07-21 14:01:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-07-21 14:01:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-07-21 14:01:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-07-21 14:01:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-07-21 14:01:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-21 14:01:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-07-21 14:01:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-21 14:01:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-07-21 14:01:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-07-21 14:01:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-21 14:01:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-07-21 14:01:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-07-21 14:01:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-07-21 14:01:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-07-21 14:01:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-07-21 14:01:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-07-21 14:01:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-07-21 14:01:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-07-21 14:01:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-07-21 14:01:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-07-21 14:01:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-07-21 14:01:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-07-21 14:01:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 14:01:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 14:01:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 14:01:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 14:01:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:01:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:01:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:01:58,592 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:01:58,593 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 14:01:58,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:01:58 BoogieIcfgContainer [2020-07-21 14:01:58,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:01:58,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:01:58,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:01:58,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:01:58,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:01:57" (1/3) ... [2020-07-21 14:01:58,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73059db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:01:58, skipping insertion in model container [2020-07-21 14:01:58,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:01:57" (2/3) ... [2020-07-21 14:01:58,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73059db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:01:58, skipping insertion in model container [2020-07-21 14:01:58,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:01:58" (3/3) ... [2020-07-21 14:01:58,606 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-07-21 14:01:58,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:01:58,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:01:58,643 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:01:58,666 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:01:58,666 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:01:58,666 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:01:58,666 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:01:58,667 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:01:58,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:01:58,667 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:01:58,667 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:01:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-07-21 14:01:58,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-21 14:01:58,695 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:01:58,696 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] [2020-07-21 14:01:58,697 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:01:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:01:58,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1663477819, now seen corresponding path program 1 times [2020-07-21 14:01:58,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:01:58,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750241187] [2020-07-21 14:01:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:01:58,877 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:01:58,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:01:58,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 14:01:58,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:01:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:01:58,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:01:58,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750241187] [2020-07-21 14:01:58,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:01:58,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 14:01:58,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360252329] [2020-07-21 14:01:58,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 14:01:58,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:01:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 14:01:58,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:01:58,956 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-07-21 14:01:59,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:01:59,007 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2020-07-21 14:01:59,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 14:01:59,008 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2020-07-21 14:01:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:01:59,020 INFO L225 Difference]: With dead ends: 102 [2020-07-21 14:01:59,020 INFO L226 Difference]: Without dead ends: 47 [2020-07-21 14:01:59,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:01:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-21 14:01:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-07-21 14:01:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-21 14:01:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2020-07-21 14:01:59,078 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 32 [2020-07-21 14:01:59,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:01:59,079 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2020-07-21 14:01:59,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 14:01:59,079 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2020-07-21 14:01:59,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 14:01:59,080 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:01:59,081 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] [2020-07-21 14:01:59,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:01:59,296 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:01:59,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:01:59,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1140955694, now seen corresponding path program 1 times [2020-07-21 14:01:59,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:01:59,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948921762] [2020-07-21 14:01:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:01:59,401 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:01:59,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:01:59,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:01:59,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:01:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:01:59,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:01:59,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948921762] [2020-07-21 14:01:59,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:01:59,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:01:59,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330653748] [2020-07-21 14:01:59,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:01:59,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:01:59,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:01:59,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:01:59,435 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 3 states. [2020-07-21 14:01:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:01:59,456 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions. [2020-07-21 14:01:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:01:59,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-21 14:01:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:01:59,459 INFO L225 Difference]: With dead ends: 83 [2020-07-21 14:01:59,459 INFO L226 Difference]: Without dead ends: 48 [2020-07-21 14:01:59,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:01:59,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-21 14:01:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-07-21 14:01:59,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-21 14:01:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2020-07-21 14:01:59,470 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 36 [2020-07-21 14:01:59,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:01:59,470 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2020-07-21 14:01:59,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:01:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-07-21 14:01:59,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 14:01:59,473 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:01:59,473 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] [2020-07-21 14:01:59,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:01:59,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:01:59,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:01:59,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1359810412, now seen corresponding path program 1 times [2020-07-21 14:01:59,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:01:59,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398955228] [2020-07-21 14:01:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:01:59,844 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:01:59,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:01:59,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:01:59,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:01:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:01:59,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:01:59,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398955228] [2020-07-21 14:01:59,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:01:59,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:01:59,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526584240] [2020-07-21 14:01:59,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:01:59,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:01:59,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:01:59,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:01:59,906 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 3 states. [2020-07-21 14:01:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:01:59,940 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2020-07-21 14:01:59,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:01:59,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-21 14:01:59,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:01:59,943 INFO L225 Difference]: With dead ends: 90 [2020-07-21 14:01:59,943 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 14:01:59,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:01:59,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 14:01:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-07-21 14:01:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-21 14:01:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2020-07-21 14:01:59,953 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 36 [2020-07-21 14:01:59,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:01:59,954 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2020-07-21 14:01:59,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:01:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2020-07-21 14:01:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 14:01:59,956 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:01:59,956 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] [2020-07-21 14:02:00,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:00,171 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:00,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:00,172 INFO L82 PathProgramCache]: Analyzing trace with hash 446687854, now seen corresponding path program 1 times [2020-07-21 14:02:00,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:00,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930880477] [2020-07-21 14:02:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:00,263 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:00,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:00,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:02:00,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:00,321 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:00,334 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 14:02:00,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:00,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930880477] [2020-07-21 14:02:00,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:00,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 14:02:00,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377683263] [2020-07-21 14:02:00,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 14:02:00,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:00,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 14:02:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:02:00,354 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand 5 states. [2020-07-21 14:02:00,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:00,487 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2020-07-21 14:02:00,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 14:02:00,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-21 14:02:00,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:00,491 INFO L225 Difference]: With dead ends: 109 [2020-07-21 14:02:00,491 INFO L226 Difference]: Without dead ends: 73 [2020-07-21 14:02:00,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:02:00,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-21 14:02:00,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53. [2020-07-21 14:02:00,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-21 14:02:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-07-21 14:02:00,507 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 38 [2020-07-21 14:02:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:00,508 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-07-21 14:02:00,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 14:02:00,508 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-07-21 14:02:00,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 14:02:00,510 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:00,510 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] [2020-07-21 14:02:00,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:00,726 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:00,728 INFO L82 PathProgramCache]: Analyzing trace with hash -140118160, now seen corresponding path program 1 times [2020-07-21 14:02:00,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:00,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248666712] [2020-07-21 14:02:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:00,815 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:00,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:00,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:02:00,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:00,854 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 14:02:00,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:00,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248666712] [2020-07-21 14:02:00,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:00,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 14:02:00,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788261196] [2020-07-21 14:02:00,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 14:02:00,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:00,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 14:02:00,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:02:00,880 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 6 states. [2020-07-21 14:02:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:01,039 INFO L93 Difference]: Finished difference Result 152 states and 192 transitions. [2020-07-21 14:02:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 14:02:01,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-21 14:02:01,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:01,043 INFO L225 Difference]: With dead ends: 152 [2020-07-21 14:02:01,043 INFO L226 Difference]: Without dead ends: 107 [2020-07-21 14:02:01,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:02:01,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-21 14:02:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75. [2020-07-21 14:02:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-21 14:02:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2020-07-21 14:02:01,058 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 38 [2020-07-21 14:02:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:01,058 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2020-07-21 14:02:01,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 14:02:01,059 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2020-07-21 14:02:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 14:02:01,060 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:01,060 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] [2020-07-21 14:02:01,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:01,274 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:01,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1829061902, now seen corresponding path program 1 times [2020-07-21 14:02:01,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:01,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953805609] [2020-07-21 14:02:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:01,353 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:01,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:01,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:02:01,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:01,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:02:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:01,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953805609] [2020-07-21 14:02:01,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:02:01,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 14:02:01,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890364026] [2020-07-21 14:02:01,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 14:02:01,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:01,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 14:02:01,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:02:01,462 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand 6 states. [2020-07-21 14:02:01,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:01,494 INFO L93 Difference]: Finished difference Result 147 states and 187 transitions. [2020-07-21 14:02:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 14:02:01,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-21 14:02:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:01,497 INFO L225 Difference]: With dead ends: 147 [2020-07-21 14:02:01,497 INFO L226 Difference]: Without dead ends: 81 [2020-07-21 14:02:01,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:02:01,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-21 14:02:01,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-07-21 14:02:01,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-21 14:02:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2020-07-21 14:02:01,524 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 38 [2020-07-21 14:02:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:01,525 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2020-07-21 14:02:01,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 14:02:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2020-07-21 14:02:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 14:02:01,526 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:01,528 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:02:01,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:01,742 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:01,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:01,743 INFO L82 PathProgramCache]: Analyzing trace with hash 882604280, now seen corresponding path program 2 times [2020-07-21 14:02:01,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:01,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358691042] [2020-07-21 14:02:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:01,821 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:01,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:01,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 14:02:01,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:01,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:02:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:01,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358691042] [2020-07-21 14:02:01,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:02:01,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-21 14:02:01,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323795833] [2020-07-21 14:02:01,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 14:02:01,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:01,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 14:02:01,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-07-21 14:02:01,978 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand 10 states. [2020-07-21 14:02:02,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:02,038 INFO L93 Difference]: Finished difference Result 155 states and 196 transitions. [2020-07-21 14:02:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 14:02:02,039 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-07-21 14:02:02,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:02,041 INFO L225 Difference]: With dead ends: 155 [2020-07-21 14:02:02,041 INFO L226 Difference]: Without dead ends: 89 [2020-07-21 14:02:02,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-07-21 14:02:02,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-21 14:02:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-07-21 14:02:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-21 14:02:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2020-07-21 14:02:02,063 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 44 [2020-07-21 14:02:02,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:02,063 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2020-07-21 14:02:02,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 14:02:02,063 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2020-07-21 14:02:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 14:02:02,069 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:02,075 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:02:02,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:02,277 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1162447360, now seen corresponding path program 3 times [2020-07-21 14:02:02,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:02,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777335065] [2020-07-21 14:02:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:02,371 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:02,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:02,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:02:02,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-07-21 14:02:02,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:02,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777335065] [2020-07-21 14:02:02,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:02,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 14:02:02,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797053257] [2020-07-21 14:02:02,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 14:02:02,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:02,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 14:02:02,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:02:02,426 INFO L87 Difference]: Start difference. First operand 89 states and 108 transitions. Second operand 5 states. [2020-07-21 14:02:02,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:02,561 INFO L93 Difference]: Finished difference Result 167 states and 209 transitions. [2020-07-21 14:02:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 14:02:02,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-07-21 14:02:02,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:02,563 INFO L225 Difference]: With dead ends: 167 [2020-07-21 14:02:02,564 INFO L226 Difference]: Without dead ends: 96 [2020-07-21 14:02:02,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:02:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-21 14:02:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-07-21 14:02:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-21 14:02:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2020-07-21 14:02:02,573 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 52 [2020-07-21 14:02:02,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:02,573 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2020-07-21 14:02:02,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 14:02:02,573 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-07-21 14:02:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 14:02:02,575 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:02,575 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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] [2020-07-21 14:02:02,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:02,790 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:02,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:02,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1580860481, now seen corresponding path program 1 times [2020-07-21 14:02:02,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:02,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735315458] [2020-07-21 14:02:02,792 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:02,918 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:02,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:02,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:02:02,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:02,941 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-07-21 14:02:02,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:02,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735315458] [2020-07-21 14:02:02,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:02,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 14:02:02,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910916314] [2020-07-21 14:02:02,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 14:02:02,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:02,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 14:02:02,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:02:02,968 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand 5 states. [2020-07-21 14:02:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:03,042 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2020-07-21 14:02:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 14:02:03,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-07-21 14:02:03,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:03,043 INFO L225 Difference]: With dead ends: 92 [2020-07-21 14:02:03,043 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 14:02:03,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:02:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 14:02:03,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 14:02:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 14:02:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 14:02:03,045 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-07-21 14:02:03,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:03,046 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 14:02:03,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 14:02:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 14:02:03,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 14:02:03,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:03,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 14:02:03,396 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-07-21 14:02:03,397 INFO L268 CegarLoopResult]: For program point L60-2(line 60) no Hoare annotation was computed. [2020-07-21 14:02:03,397 INFO L268 CegarLoopResult]: For program point L60-4(lines 54 72) no Hoare annotation was computed. [2020-07-21 14:02:03,397 INFO L268 CegarLoopResult]: For program point L56-1(line 56) no Hoare annotation was computed. [2020-07-21 14:02:03,397 INFO L268 CegarLoopResult]: For program point L56-3(line 56) no Hoare annotation was computed. [2020-07-21 14:02:03,397 INFO L271 CegarLoopResult]: At program point L56-5(line 56) the Hoare annotation is: true [2020-07-21 14:02:03,398 INFO L268 CegarLoopResult]: For program point L52-1(lines 52 73) no Hoare annotation was computed. [2020-07-21 14:02:03,398 INFO L268 CegarLoopResult]: For program point L56-6(line 56) no Hoare annotation was computed. [2020-07-21 14:02:03,398 INFO L268 CegarLoopResult]: For program point L52-2(lines 52 73) no Hoare annotation was computed. [2020-07-21 14:02:03,398 INFO L271 CegarLoopResult]: At program point L52-4(lines 52 73) the Hoare annotation is: true [2020-07-21 14:02:03,398 INFO L268 CegarLoopResult]: For program point L52-5(lines 52 73) no Hoare annotation was computed. [2020-07-21 14:02:03,398 INFO L264 CegarLoopResult]: At program point L65(line 65) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-07-21 14:02:03,399 INFO L268 CegarLoopResult]: For program point L65-1(line 65) no Hoare annotation was computed. [2020-07-21 14:02:03,400 INFO L268 CegarLoopResult]: For program point L61(lines 61 70) no Hoare annotation was computed. [2020-07-21 14:02:03,400 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-07-21 14:02:03,400 INFO L268 CegarLoopResult]: For program point L57-2(line 57) no Hoare annotation was computed. [2020-07-21 14:02:03,400 INFO L264 CegarLoopResult]: At program point L66(line 66) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-07-21 14:02:03,400 INFO L268 CegarLoopResult]: For program point L66-1(line 66) no Hoare annotation was computed. [2020-07-21 14:02:03,401 INFO L268 CegarLoopResult]: For program point parse_expression_listFINAL(lines 47 75) no Hoare annotation was computed. [2020-07-21 14:02:03,401 INFO L268 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-07-21 14:02:03,402 INFO L271 CegarLoopResult]: At program point parse_expression_listENTRY(lines 47 75) the Hoare annotation is: true [2020-07-21 14:02:03,402 INFO L268 CegarLoopResult]: For program point L54(lines 54 72) no Hoare annotation was computed. [2020-07-21 14:02:03,402 INFO L268 CegarLoopResult]: For program point parse_expression_listEXIT(lines 47 75) no Hoare annotation was computed. [2020-07-21 14:02:03,402 INFO L268 CegarLoopResult]: For program point L59-1(line 59) no Hoare annotation was computed. [2020-07-21 14:02:03,402 INFO L268 CegarLoopResult]: For program point L59-2(line 59) no Hoare annotation was computed. [2020-07-21 14:02:03,402 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 14:02:03,402 INFO L268 CegarLoopResult]: For program point L59-4(line 59) no Hoare annotation was computed. [2020-07-21 14:02:03,402 INFO L268 CegarLoopResult]: For program point L59-6(line 59) no Hoare annotation was computed. [2020-07-21 14:02:03,403 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-07-21 14:02:03,403 INFO L271 CegarLoopResult]: At program point L59-8(line 59) the Hoare annotation is: true [2020-07-21 14:02:03,403 INFO L268 CegarLoopResult]: For program point L59-9(line 59) no Hoare annotation was computed. [2020-07-21 14:02:03,403 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:02:03,403 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:02:03,403 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:02:03,403 INFO L268 CegarLoopResult]: For program point r_strncpyFINAL(line 31) no Hoare annotation was computed. [2020-07-21 14:02:03,403 INFO L268 CegarLoopResult]: For program point r_strncpyEXIT(line 31) no Hoare annotation was computed. [2020-07-21 14:02:03,404 INFO L271 CegarLoopResult]: At program point r_strncpyENTRY(line 31) the Hoare annotation is: true [2020-07-21 14:02:03,404 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:02:03,404 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 14:02:03,404 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:02:03,404 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:02:03,405 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 76 85) the Hoare annotation is: true [2020-07-21 14:02:03,405 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 76 85) no Hoare annotation was computed. [2020-07-21 14:02:03,405 INFO L271 CegarLoopResult]: At program point L83(line 83) the Hoare annotation is: true [2020-07-21 14:02:03,405 INFO L268 CegarLoopResult]: For program point L83-1(line 83) no Hoare annotation was computed. [2020-07-21 14:02:03,405 INFO L268 CegarLoopResult]: For program point L79-2(lines 79 81) no Hoare annotation was computed. [2020-07-21 14:02:03,405 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 76 85) no Hoare annotation was computed. [2020-07-21 14:02:03,405 INFO L271 CegarLoopResult]: At program point L79-3(lines 79 81) the Hoare annotation is: true [2020-07-21 14:02:03,405 INFO L268 CegarLoopResult]: For program point L79-4(lines 79 81) no Hoare annotation was computed. [2020-07-21 14:02:03,406 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-21 14:02:03,406 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-21 14:02:03,406 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 14:02:03,406 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-21 14:02:03,406 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-21 14:02:03,406 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-21 14:02:03,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:02:03 BoogieIcfgContainer [2020-07-21 14:02:03,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 14:02:03,432 INFO L168 Benchmark]: Toolchain (without parser) took 6036.92 ms. Allocated memory was 144.7 MB in the beginning and 248.0 MB in the end (delta: 103.3 MB). Free memory was 101.6 MB in the beginning and 200.8 MB in the end (delta: -99.2 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-21 14:02:03,433 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 14:02:03,435 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.13 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 178.6 MB in the end (delta: -77.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-07-21 14:02:03,436 INFO L168 Benchmark]: Boogie Preprocessor took 62.80 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 176.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-21 14:02:03,436 INFO L168 Benchmark]: RCFGBuilder took 574.73 ms. Allocated memory is still 201.9 MB. Free memory was 176.0 MB in the beginning and 147.2 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-07-21 14:02:03,447 INFO L168 Benchmark]: TraceAbstraction took 4825.06 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 146.6 MB in the beginning and 200.8 MB in the end (delta: -54.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 14:02:03,452 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 564.13 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 178.6 MB in the end (delta: -77.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.80 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 176.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 574.73 ms. Allocated memory is still 201.9 MB. Free memory was 176.0 MB in the beginning and 147.2 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4825.06 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 146.6 MB in the beginning and 200.8 MB in the end (delta: -54.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 79]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 9, TraceHistogramMax: 8, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 481 SDtfs, 160 SDslu, 864 SDs, 0 SdLazy, 283 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 450 GetRequests, 415 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 58 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 54 PreInvPairs, 77 NumberOfFragments, 22 HoareAnnotationTreeSize, 54 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 371 NumberOfCodeBlocks, 371 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 442 ConstructedInterpolants, 0 QuantifiedInterpolants, 30091 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1360 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 132/166 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...