/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 02:08:04,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 02:08:04,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 02:08:04,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 02:08:04,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 02:08:04,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 02:08:04,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 02:08:04,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 02:08:04,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 02:08:04,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 02:08:04,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 02:08:04,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 02:08:04,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 02:08:04,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 02:08:04,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 02:08:04,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 02:08:04,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 02:08:04,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 02:08:04,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 02:08:04,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 02:08:04,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 02:08:04,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 02:08:04,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 02:08:04,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 02:08:04,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 02:08:04,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 02:08:04,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 02:08:04,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 02:08:04,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 02:08:04,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 02:08:04,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 02:08:04,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 02:08:04,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 02:08:04,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 02:08:04,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 02:08:04,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 02:08:04,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 02:08:04,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 02:08:04,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 02:08:04,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 02:08:04,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 02:08:04,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 02:08:04,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 02:08:04,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 02:08:04,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 02:08:04,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 02:08:04,969 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 02:08:04,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 02:08:04,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 02:08:04,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 02:08:04,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 02:08:04,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 02:08:04,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 02:08:04,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 02:08:04,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 02:08:04,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 02:08:04,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 02:08:04,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 02:08:04,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 02:08:04,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 02:08:04,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 02:08:04,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 02:08:04,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 02:08:04,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:08:04,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 02:08:04,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 02:08:04,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 02:08:04,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 02:08:04,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:04,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 02:08:04,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 02:08:04,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 02:08:05,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 02:08:05,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 02:08:05,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 02:08:05,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 02:08:05,319 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 02:08:05,322 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-07-21 02:08:05,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e6717fb/0cc700976e994b5c8effba6cfb0928cc/FLAGbb8b0799f [2020-07-21 02:08:05,980 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 02:08:05,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-07-21 02:08:05,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e6717fb/0cc700976e994b5c8effba6cfb0928cc/FLAGbb8b0799f [2020-07-21 02:08:06,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e6717fb/0cc700976e994b5c8effba6cfb0928cc [2020-07-21 02:08:06,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 02:08:06,411 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 02:08:06,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 02:08:06,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 02:08:06,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 02:08:06,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:08:06" (1/1) ... [2020-07-21 02:08:06,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4dbc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:06, skipping insertion in model container [2020-07-21 02:08:06,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:08:06" (1/1) ... [2020-07-21 02:08:06,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 02:08:06,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 02:08:06,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:08:06,698 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 02:08:06,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:08:06,732 INFO L208 MainTranslator]: Completed translation [2020-07-21 02:08:06,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:06 WrapperNode [2020-07-21 02:08:06,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 02:08:06,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 02:08:06,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 02:08:06,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 02:08:06,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:06" (1/1) ... [2020-07-21 02:08:06,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:06" (1/1) ... [2020-07-21 02:08:06,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:06" (1/1) ... [2020-07-21 02:08:06,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:06" (1/1) ... [2020-07-21 02:08:06,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:06" (1/1) ... [2020-07-21 02:08:06,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:06" (1/1) ... [2020-07-21 02:08:06,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:06" (1/1) ... [2020-07-21 02:08:06,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 02:08:06,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 02:08:06,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 02:08:06,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 02:08:06,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:08:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 02:08:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 02:08:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 02:08:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 02:08:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 02:08:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 02:08:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 02:08:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 02:08:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 02:08:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 02:08:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 02:08:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 02:08:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 02:08:07,205 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 02:08:07,205 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 02:08:07,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:08:07 BoogieIcfgContainer [2020-07-21 02:08:07,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 02:08:07,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 02:08:07,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 02:08:07,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 02:08:07,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:08:06" (1/3) ... [2020-07-21 02:08:07,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7275c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:08:07, skipping insertion in model container [2020-07-21 02:08:07,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:06" (2/3) ... [2020-07-21 02:08:07,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7275c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:08:07, skipping insertion in model container [2020-07-21 02:08:07,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:08:07" (3/3) ... [2020-07-21 02:08:07,249 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-07-21 02:08:07,279 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 02:08:07,288 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 02:08:07,306 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 02:08:07,335 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 02:08:07,336 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 02:08:07,336 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 02:08:07,336 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 02:08:07,337 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 02:08:07,337 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 02:08:07,337 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 02:08:07,337 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 02:08:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-21 02:08:07,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 02:08:07,367 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:08:07,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:08:07,368 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:08:07,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:08:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash -12471351, now seen corresponding path program 1 times [2020-07-21 02:08:07,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:08:07,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335088623] [2020-07-21 02:08:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:07,475 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:08:07,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:08:07,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 02:08:07,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:08:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:08:07,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:08:07,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335088623] [2020-07-21 02:08:07,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:08:07,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 02:08:07,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974507804] [2020-07-21 02:08:07,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 02:08:07,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:08:07,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 02:08:07,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:08:07,629 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-21 02:08:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:08:07,787 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2020-07-21 02:08:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 02:08:07,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 02:08:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:08:07,809 INFO L225 Difference]: With dead ends: 51 [2020-07-21 02:08:07,809 INFO L226 Difference]: Without dead ends: 19 [2020-07-21 02:08:07,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 02:08:07,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-21 02:08:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-21 02:08:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 02:08:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-07-21 02:08:07,887 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2020-07-21 02:08:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:08:07,888 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-07-21 02:08:07,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 02:08:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-07-21 02:08:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 02:08:07,892 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:08:07,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:08:08,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:08,107 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:08:08,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:08:08,108 INFO L82 PathProgramCache]: Analyzing trace with hash -793409467, now seen corresponding path program 1 times [2020-07-21 02:08:08,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:08:08,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911827595] [2020-07-21 02:08:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:08,167 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:08:08,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:08:08,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 02:08:08,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:08:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:08:08,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:08:08,439 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:08:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:08:10,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911827595] [2020-07-21 02:08:10,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:08:10,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 02:08:10,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397830686] [2020-07-21 02:08:10,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 02:08:10,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:08:10,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 02:08:10,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=134, Unknown=1, NotChecked=0, Total=182 [2020-07-21 02:08:10,855 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 14 states. [2020-07-21 02:08:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:08:21,760 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-07-21 02:08:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 02:08:21,762 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 02:08:21,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:08:21,763 INFO L225 Difference]: With dead ends: 40 [2020-07-21 02:08:21,763 INFO L226 Difference]: Without dead ends: 26 [2020-07-21 02:08:21,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=178, Unknown=1, NotChecked=0, Total=240 [2020-07-21 02:08:21,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-21 02:08:21,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-21 02:08:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-21 02:08:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-21 02:08:21,772 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2020-07-21 02:08:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:08:21,772 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-21 02:08:21,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 02:08:21,773 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-21 02:08:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 02:08:21,774 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:08:21,774 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:08:21,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:21,991 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:08:21,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:08:21,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1087804450, now seen corresponding path program 1 times [2020-07-21 02:08:21,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:08:21,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136328919] [2020-07-21 02:08:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:22,030 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:08:22,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:08:22,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 02:08:22,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:08:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:08:22,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:08:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:08:22,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136328919] [2020-07-21 02:08:22,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:08:22,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 02:08:22,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096914539] [2020-07-21 02:08:22,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 02:08:22,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:08:22,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 02:08:22,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-21 02:08:22,141 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 8 states. [2020-07-21 02:08:22,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:08:22,463 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2020-07-21 02:08:22,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 02:08:22,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-21 02:08:22,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:08:22,467 INFO L225 Difference]: With dead ends: 60 [2020-07-21 02:08:22,467 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 02:08:22,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-07-21 02:08:22,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 02:08:22,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-07-21 02:08:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-21 02:08:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-07-21 02:08:22,495 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 23 [2020-07-21 02:08:22,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:08:22,495 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-07-21 02:08:22,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 02:08:22,496 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-07-21 02:08:22,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 02:08:22,499 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:08:22,499 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:08:22,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:22,702 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:08:22,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:08:22,703 INFO L82 PathProgramCache]: Analyzing trace with hash -563580765, now seen corresponding path program 1 times [2020-07-21 02:08:22,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:08:22,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056399957] [2020-07-21 02:08:22,704 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:22,747 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:08:22,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:08:22,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-21 02:08:22,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:08:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:08:23,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:08:23,154 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:08:27,512 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_main_~l~0 4294967296)) (.cse2 (= 0 (mod (mod c_main_~l~0 4294967296) 3))) (.cse0 (+ c_main_~l~0 1))) (or (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 1) 4294967296) (mod .cse0 4294967296)) (and (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296)) (< .cse1 0) (not .cse2)) (and (or (<= 0 .cse1) .cse2) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296))) (< (mod .cse0 4294967296) (mod c_main_~n~0 4294967296)))) is different from true [2020-07-21 02:08:59,046 WARN L193 SmtUtils]: Spent 8.46 s on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2020-07-21 02:09:01,262 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 37 [2020-07-21 02:09:22,183 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 37 [2020-07-21 02:09:30,654 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 02:09:51,537 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 02:09:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 2 times theorem prover too weak. 0 trivial. 3 not checked. [2020-07-21 02:09:51,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056399957] [2020-07-21 02:09:51,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:09:51,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2020-07-21 02:09:51,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644361974] [2020-07-21 02:09:51,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 02:09:51,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:09:51,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 02:09:51,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=340, Unknown=28, NotChecked=40, Total=506 [2020-07-21 02:09:51,561 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 23 states. [2020-07-21 02:09:54,074 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 1) 4294967296)) (.cse0 (+ c_main_~l~0 1)) (.cse2 (+ c_main_~l~0 2))) (and (or (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0) 4294967296) (mod .cse0 4294967296)) (< (mod .cse0 4294967296) (mod c_main_~n~0 4294967296))) (or (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) (= .cse1 (mod .cse2 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 3) 4294967296))) (or (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296)) (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)))) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (= .cse1 (mod .cse0 4294967296))) (or (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 2) 4294967296) (mod (+ c_main_~l~0 3) 4294967296)) (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 2) 4294967296)) (< (mod (+ c_main_~l~0 3) 4294967296) (mod main_~n~0 4294967296)))) (= 0 (mod (mod (mod .cse2 4294967296) 3) 4294967296))))) is different from false [2020-07-21 02:10:46,279 WARN L193 SmtUtils]: Spent 33.33 s on a formula simplification that was a NOOP. DAG size: 71 [2020-07-21 02:12:13,729 WARN L193 SmtUtils]: Spent 1.07 m on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-07-21 02:12:22,270 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 1)) (.cse0 (+ c_main_~l~0 1)) (.cse4 (mod c_main_~n~0 4294967296))) (and (or (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) (= 0 (mod (mod (mod .cse0 4294967296) 3) 4294967296)) (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 2) 4294967296) (mod (+ c_main_~l~0 2) 4294967296))) (let ((.cse2 (mod c_main_~l~0 4294967296)) (.cse3 (= 0 (mod (mod c_main_~l~0 4294967296) 3)))) (or (= (mod .cse1 4294967296) (mod .cse0 4294967296)) (and (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296)) (< .cse2 0) (not .cse3)) (and (or (<= 0 .cse2) .cse3) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296))) (< (mod .cse0 4294967296) .cse4))) (or (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296)) (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)))) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (= (mod .cse1 4294967296) (mod .cse0 4294967296))) (or (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0) 4294967296) (mod c_main_~l~0 4294967296)) (< (mod c_main_~l~0 4294967296) .cse4)))) is different from false [2020-07-21 02:13:31,170 WARN L193 SmtUtils]: Spent 45.18 s on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-07-21 02:14:12,092 WARN L193 SmtUtils]: Spent 8.70 s on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 02:14:48,572 WARN L193 SmtUtils]: Spent 8.65 s on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 02:15:18,845 WARN L193 SmtUtils]: Spent 8.72 s on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 02:16:08,030 WARN L193 SmtUtils]: Spent 12.88 s on a formula simplification that was a NOOP. DAG size: 42 [2020-07-21 02:16:46,896 WARN L193 SmtUtils]: Spent 17.32 s on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2020-07-21 02:17:49,205 WARN L193 SmtUtils]: Spent 8.71 s on a formula simplification that was a NOOP. DAG size: 57 [2020-07-21 02:18:08,520 WARN L838 $PredicateComparison]: unable to prove that (and (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0) 4294967296) (mod c_main_~l~0 4294967296)) (or (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) (= 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 3) 4294967296)) (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 2) 4294967296) (mod (+ c_main_~l~0 2) 4294967296)))) is different from false [2020-07-21 02:18:10,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:18:10,670 INFO L93 Difference]: Finished difference Result 95 states and 128 transitions. [2020-07-21 02:18:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 02:18:10,671 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2020-07-21 02:18:10,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:18:10,672 INFO L225 Difference]: With dead ends: 95 [2020-07-21 02:18:10,672 INFO L226 Difference]: Without dead ends: 67 [2020-07-21 02:18:10,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 457.9s TimeCoverageRelationStatistics Valid=210, Invalid=701, Unknown=97, NotChecked=252, Total=1260 [2020-07-21 02:18:10,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-21 02:18:10,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-07-21 02:18:10,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 02:18:10,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2020-07-21 02:18:10,686 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 25 [2020-07-21 02:18:10,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:18:10,687 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2020-07-21 02:18:10,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 02:18:10,687 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2020-07-21 02:18:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-21 02:18:10,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:18:10,688 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:18:10,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:18:10,890 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:18:10,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:18:10,891 INFO L82 PathProgramCache]: Analyzing trace with hash 45927801, now seen corresponding path program 1 times [2020-07-21 02:18:10,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:18:10,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880644645] [2020-07-21 02:18:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:18:10,934 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:18:10,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:18:10,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2020-07-21 02:18:10,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:18:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:18:11,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:18:11,419 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:18:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 37 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:18:34,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880644645] [2020-07-21 02:18:34,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:18:34,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2020-07-21 02:18:34,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983141952] [2020-07-21 02:18:34,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-21 02:18:34,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:18:34,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-21 02:18:34,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=709, Unknown=10, NotChecked=0, Total=870 [2020-07-21 02:18:34,446 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand 30 states. [2020-07-21 02:18:56,664 WARN L193 SmtUtils]: Spent 20.47 s on a formula simplification. DAG size of input: 86 DAG size of output: 24 [2020-07-21 02:19:50,347 WARN L193 SmtUtils]: Spent 42.55 s on a formula simplification. DAG size of input: 85 DAG size of output: 27 [2020-07-21 02:20:38,394 WARN L193 SmtUtils]: Spent 40.60 s on a formula simplification. DAG size of input: 92 DAG size of output: 48 [2020-07-21 02:21:20,547 WARN L193 SmtUtils]: Spent 21.47 s on a formula simplification. DAG size of input: 69 DAG size of output: 22 [2020-07-21 02:22:29,091 WARN L193 SmtUtils]: Spent 46.30 s on a formula simplification. DAG size of input: 86 DAG size of output: 48