/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:46:51,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:46:51,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:46:51,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:46:51,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:46:51,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:46:51,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:46:51,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:46:51,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:46:51,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:46:51,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:46:51,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:46:51,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:46:51,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:46:51,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:46:51,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:46:51,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:46:51,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:46:51,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:46:51,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:46:51,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:46:51,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:46:51,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:46:51,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:46:51,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:46:51,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:46:51,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:46:51,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:46:51,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:46:51,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:46:51,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:46:51,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:46:51,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:46:51,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:46:51,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:46:51,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:46:51,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:46:51,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:46:51,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:46:51,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:46:51,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:46:51,521 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 16:46:51,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:46:51,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:46:51,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:46:51,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:46:51,540 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:46:51,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:46:51,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:46:51,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:46:51,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:46:51,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:46:51,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:46:51,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:46:51,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:46:51,542 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:46:51,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:46:51,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:46:51,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:46:51,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:46:51,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:46:51,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:46:51,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:46:51,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:46:51,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:46:51,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:46:51,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:46:51,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:46:51,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:46:51,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:46:51,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:46:51,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:46:51,859 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:46:51,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:46:51,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:46:51,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:46:51,888 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:46:51,889 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-07-21 16:46:51,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93a2a25a/be78c077eb8a4fceba161b45cc465d27/FLAGe83c34a45 [2020-07-21 16:46:52,636 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:46:52,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-07-21 16:46:52,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93a2a25a/be78c077eb8a4fceba161b45cc465d27/FLAGe83c34a45 [2020-07-21 16:46:52,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93a2a25a/be78c077eb8a4fceba161b45cc465d27 [2020-07-21 16:46:52,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:46:52,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:46:52,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:46:52,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:46:52,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:46:52,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:46:52" (1/1) ... [2020-07-21 16:46:52,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1366f46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:52, skipping insertion in model container [2020-07-21 16:46:52,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:46:52" (1/1) ... [2020-07-21 16:46:53,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:46:53,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:46:53,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:46:53,228 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:46:53,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:46:53,266 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:46:53,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:53 WrapperNode [2020-07-21 16:46:53,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:46:53,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:46:53,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:46:53,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:46:53,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:53" (1/1) ... [2020-07-21 16:46:53,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:53" (1/1) ... [2020-07-21 16:46:53,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:53" (1/1) ... [2020-07-21 16:46:53,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:53" (1/1) ... [2020-07-21 16:46:53,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:53" (1/1) ... [2020-07-21 16:46:53,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:53" (1/1) ... [2020-07-21 16:46:53,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:53" (1/1) ... [2020-07-21 16:46:53,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:46:53,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:46:53,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:46:53,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:46:53,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:53" (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 16:46:53,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:46:53,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:46:53,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 16:46:53,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:46:53,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:46:53,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 16:46:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:46:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:46:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:46:53,683 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:46:53,684 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 16:46:53,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:46:53 BoogieIcfgContainer [2020-07-21 16:46:53,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:46:53,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:46:53,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:46:53,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:46:53,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:46:52" (1/3) ... [2020-07-21 16:46:53,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29680eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:46:53, skipping insertion in model container [2020-07-21 16:46:53,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:46:53" (2/3) ... [2020-07-21 16:46:53,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29680eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:46:53, skipping insertion in model container [2020-07-21 16:46:53,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:46:53" (3/3) ... [2020-07-21 16:46:53,700 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2020-07-21 16:46:53,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:46:53,724 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:46:53,742 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:46:53,771 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:46:53,772 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:46:53,772 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:46:53,772 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:46:53,773 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:46:53,773 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:46:53,773 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:46:53,774 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:46:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-21 16:46:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 16:46:53,806 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:46:53,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:46:53,808 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:46:53,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:46:53,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1847991872, now seen corresponding path program 1 times [2020-07-21 16:46:53,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:46:53,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976013454] [2020-07-21 16:46:53,824 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 16:46:53,909 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:46:53,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:46:53,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 16:46:53,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:46:54,143 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 16:46:54,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:46:54,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976013454] [2020-07-21 16:46:54,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:46:54,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 16:46:54,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483610459] [2020-07-21 16:46:54,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:46:54,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:46:54,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:46:54,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:46:54,174 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-21 16:46:54,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:46:54,340 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2020-07-21 16:46:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:46:54,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-07-21 16:46:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:46:54,352 INFO L225 Difference]: With dead ends: 36 [2020-07-21 16:46:54,353 INFO L226 Difference]: Without dead ends: 20 [2020-07-21 16:46:54,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:46:54,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-21 16:46:54,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-07-21 16:46:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 16:46:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-21 16:46:54,406 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-07-21 16:46:54,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:46:54,407 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-21 16:46:54,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:46:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-21 16:46:54,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 16:46:54,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:46:54,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:46:54,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:46:54,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:46:54,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:46:54,626 INFO L82 PathProgramCache]: Analyzing trace with hash 982254813, now seen corresponding path program 1 times [2020-07-21 16:46:54,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:46:54,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754942329] [2020-07-21 16:46:54,627 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 16:46:54,675 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:46:54,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:46:54,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 16:46:54,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:46:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:46:54,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:46:54,823 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:46:59,106 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:47:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:47:07,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754942329] [2020-07-21 16:47:07,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:47:07,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-21 16:47:07,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495244189] [2020-07-21 16:47:07,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 16:47:07,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:47:07,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 16:47:07,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=58, Unknown=6, NotChecked=0, Total=90 [2020-07-21 16:47:07,471 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2020-07-21 16:47:09,714 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~i~0 3)) (.cse1 (* c_main_~i~0 2))) (and (= (mod c_main_~k~0 4294967296) (mod .cse0 4294967296)) (= (mod (+ c_main_~j~0 2) 4294967296) (mod (+ .cse1 2) 4294967296)) (= (mod .cse1 4294967296) (mod c_main_~j~0 4294967296)) (= (mod (+ .cse0 3) 4294967296) (mod (+ c_main_~k~0 3) 4294967296)) (= (mod (+ .cse0 6) 4294967296) (mod (+ c_main_~k~0 6) 4294967296)) (= (mod (+ c_main_~j~0 4) 4294967296) (mod (+ .cse1 4) 4294967296)))) is different from false [2020-07-21 16:47:22,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:47:22,302 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-21 16:47:22,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 16:47:22,303 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-07-21 16:47:22,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:47:22,306 INFO L225 Difference]: With dead ends: 32 [2020-07-21 16:47:22,306 INFO L226 Difference]: Without dead ends: 30 [2020-07-21 16:47:22,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=32, Invalid=75, Unknown=7, NotChecked=18, Total=132 [2020-07-21 16:47:22,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-21 16:47:22,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-07-21 16:47:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 16:47:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-21 16:47:22,323 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16 [2020-07-21 16:47:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:47:22,324 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-21 16:47:22,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 16:47:22,325 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-21 16:47:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 16:47:22,327 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:47:22,327 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:47:22,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:47:22,530 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:47:22,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:47:22,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1624375756, now seen corresponding path program 2 times [2020-07-21 16:47:22,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:47:22,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297287224] [2020-07-21 16:47:22,533 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 16:47:22,615 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:47:22,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:47:22,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-21 16:47:22,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:47:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 16:47:22,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:47:22,823 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:47:27,098 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:47:35,422 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:47:47,759 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:48:04,331 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:48:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 20 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 16:48:24,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297287224] [2020-07-21 16:48:24,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:48:24,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-07-21 16:48:24,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233140589] [2020-07-21 16:48:24,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 16:48:24,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:48:24,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 16:48:24,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=30, NotChecked=0, Total=240 [2020-07-21 16:48:24,970 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 16 states. [2020-07-21 16:50:10,506 WARN L193 SmtUtils]: Spent 1.50 m on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2020-07-21 16:51:04,171 WARN L193 SmtUtils]: Spent 28.13 s on a formula simplification. DAG size of input: 69 DAG size of output: 32 [2020-07-21 16:52:11,160 WARN L193 SmtUtils]: Spent 37.23 s on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-07-21 16:53:12,788 WARN L193 SmtUtils]: Spent 19.10 s on a formula simplification. DAG size of input: 48 DAG size of output: 26 [2020-07-21 16:54:12,218 WARN L193 SmtUtils]: Spent 10.19 s on a formula simplification that was a NOOP. DAG size: 32 [2020-07-21 16:54:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:54:26,542 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-07-21 16:54:26,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 16:54:26,544 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-07-21 16:54:26,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:54:26,548 INFO L225 Difference]: With dead ends: 47 [2020-07-21 16:54:26,549 INFO L226 Difference]: Without dead ends: 45 [2020-07-21 16:54:26,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 374.7s TimeCoverageRelationStatistics Valid=130, Invalid=241, Unknown=91, NotChecked=0, Total=462 [2020-07-21 16:54:26,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-21 16:54:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-07-21 16:54:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-21 16:54:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-07-21 16:54:26,563 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 34 [2020-07-21 16:54:26,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:54:26,564 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-07-21 16:54:26,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 16:54:26,564 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-07-21 16:54:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-21 16:54:26,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:54:26,567 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:54:26,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:54:26,771 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:54:26,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:54:26,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1852656034, now seen corresponding path program 3 times [2020-07-21 16:54:26,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:54:26,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550733479] [2020-07-21 16:54:26,773 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 16:54:26,965 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:54:26,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:54:26,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 75 conjunts are in the unsatisfiable core [2020-07-21 16:54:26,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:54:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 20 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-07-21 16:54:27,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:54:27,326 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:54:31,612 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:54:39,913 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:54:54,614 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 16:54:54,636 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:55:11,332 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:55:31,914 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:55:59,139 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 16:55:59,147 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:56:28,084 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:57:01,115 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:57:38,481 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:58:20,952 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 16:58:20,967 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:59:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 22 proven. 0 refuted. 108 times theorem prover too weak. 180 trivial. 0 not checked. [2020-07-21 16:59:06,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550733479] [2020-07-21 16:59:06,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:59:06,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2020-07-21 16:59:06,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140616541] [2020-07-21 16:59:06,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-21 16:59:06,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:59:06,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-21 16:59:06,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=426, Unknown=131, NotChecked=0, Total=756 [2020-07-21 16:59:06,325 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 28 states. [2020-07-21 16:59:09,646 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_main_~i~0 3)) (.cse0 (* c_main_~i~0 2))) (and (= (mod (+ .cse0 18) 4294967296) (mod (+ c_main_~j~0 18) 4294967296)) (= (mod (+ c_main_~j~0 6) 4294967296) (mod (+ .cse0 6) 4294967296)) (= (mod (+ .cse1 24) 4294967296) (mod (+ c_main_~k~0 24) 4294967296)) (= (mod c_main_~j~0 4294967296) (mod .cse0 4294967296)) (= (mod (+ .cse1 33) 4294967296) (mod (+ c_main_~k~0 33) 4294967296)) (= (mod (+ c_main_~k~0 6) 4294967296) (mod (+ .cse1 6) 4294967296)) (= (mod .cse1 4294967296) (mod c_main_~k~0 4294967296)) (= (mod (+ c_main_~j~0 16) 4294967296) (mod (+ .cse0 16) 4294967296)) (= (mod (+ .cse1 15) 4294967296) (mod (+ c_main_~k~0 15) 4294967296)) (= (mod (+ c_main_~j~0 22) 4294967296) (mod (+ .cse0 22) 4294967296)) (= (mod (+ .cse0 4) 4294967296) (mod (+ c_main_~j~0 4) 4294967296)) (= (mod (+ .cse1 9) 4294967296) (mod (+ c_main_~k~0 9) 4294967296)) (= (mod (+ .cse1 18) 4294967296) (mod (+ c_main_~k~0 18) 4294967296)) (= (mod (+ c_main_~j~0 10) 4294967296) (mod (+ .cse0 10) 4294967296)) (= (mod (+ .cse0 14) 4294967296) (mod (+ c_main_~j~0 14) 4294967296)) (= (mod (+ c_main_~k~0 21) 4294967296) (mod (+ .cse1 21) 4294967296)) (= (mod (+ .cse1 27) 4294967296) (mod (+ c_main_~k~0 27) 4294967296)) (= (mod (+ .cse0 2) 4294967296) (mod (+ c_main_~j~0 2) 4294967296)) (= (mod (+ .cse1 3) 4294967296) (mod (+ c_main_~k~0 3) 4294967296)) (= (mod (+ c_main_~j~0 12) 4294967296) (mod (+ .cse0 12) 4294967296)))) is different from false [2020-07-21 16:59:11,660 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_main_~i~0 3)) (.cse0 (* c_main_~i~0 2))) (and (= (mod (+ .cse0 18) 4294967296) (mod (+ c_main_~j~0 18) 4294967296)) (= (mod (+ c_main_~j~0 6) 4294967296) (mod (+ .cse0 6) 4294967296)) (= (mod (+ .cse1 24) 4294967296) (mod (+ c_main_~k~0 24) 4294967296)) (= (mod (+ c_main_~k~0 6) 4294967296) (mod (+ .cse1 6) 4294967296)) (= (mod (+ c_main_~j~0 16) 4294967296) (mod (+ .cse0 16) 4294967296)) (= (mod (+ .cse1 15) 4294967296) (mod (+ c_main_~k~0 15) 4294967296)) (= (mod (+ .cse0 4) 4294967296) (mod (+ c_main_~j~0 4) 4294967296)) (= (mod (+ .cse1 9) 4294967296) (mod (+ c_main_~k~0 9) 4294967296)) (= (mod (+ .cse1 18) 4294967296) (mod (+ c_main_~k~0 18) 4294967296)) (= (mod (+ c_main_~j~0 10) 4294967296) (mod (+ .cse0 10) 4294967296)) (= (mod (+ .cse0 14) 4294967296) (mod (+ c_main_~j~0 14) 4294967296)) (= (mod (+ c_main_~k~0 21) 4294967296) (mod (+ .cse1 21) 4294967296)) (= (mod (+ .cse1 27) 4294967296) (mod (+ c_main_~k~0 27) 4294967296)) (= (mod (+ .cse0 2) 4294967296) (mod (+ c_main_~j~0 2) 4294967296)) (= (mod (+ .cse1 3) 4294967296) (mod (+ c_main_~k~0 3) 4294967296)) (= (mod (+ c_main_~j~0 12) 4294967296) (mod (+ .cse0 12) 4294967296)))) is different from false [2020-07-21 16:59:13,675 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_main_~i~0 3)) (.cse0 (* c_main_~i~0 2))) (and (= (mod (+ .cse0 18) 4294967296) (mod (+ c_main_~j~0 18) 4294967296)) (= (mod (+ c_main_~j~0 6) 4294967296) (mod (+ .cse0 6) 4294967296)) (= (mod (+ .cse1 24) 4294967296) (mod (+ c_main_~k~0 24) 4294967296)) (= (mod c_main_~j~0 4294967296) (mod .cse0 4294967296)) (= (mod (+ c_main_~k~0 6) 4294967296) (mod (+ .cse1 6) 4294967296)) (= (mod .cse1 4294967296) (mod c_main_~k~0 4294967296)) (= (mod (+ c_main_~j~0 16) 4294967296) (mod (+ .cse0 16) 4294967296)) (= (mod (+ .cse1 15) 4294967296) (mod (+ c_main_~k~0 15) 4294967296)) (= (mod (+ .cse0 4) 4294967296) (mod (+ c_main_~j~0 4) 4294967296)) (= (mod (+ .cse1 9) 4294967296) (mod (+ c_main_~k~0 9) 4294967296)) (= (mod (+ .cse1 18) 4294967296) (mod (+ c_main_~k~0 18) 4294967296)) (= (mod (+ c_main_~j~0 10) 4294967296) (mod (+ .cse0 10) 4294967296)) (= (mod (+ .cse0 14) 4294967296) (mod (+ c_main_~j~0 14) 4294967296)) (= (mod (+ c_main_~k~0 21) 4294967296) (mod (+ .cse1 21) 4294967296)) (= (mod (+ .cse1 27) 4294967296) (mod (+ c_main_~k~0 27) 4294967296)) (= (mod (+ .cse0 2) 4294967296) (mod (+ c_main_~j~0 2) 4294967296)) (= (mod (+ .cse1 3) 4294967296) (mod (+ c_main_~k~0 3) 4294967296)) (= (mod (+ c_main_~j~0 12) 4294967296) (mod (+ .cse0 12) 4294967296)))) is different from false [2020-07-21 16:59:13,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:59:13,682 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-07-21 16:59:13,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 16:59:13,682 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 70 [2020-07-21 16:59:13,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:59:13,683 INFO L225 Difference]: With dead ends: 49 [2020-07-21 16:59:13,683 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:59:13,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 285.1s TimeCoverageRelationStatistics Valid=209, Invalid=481, Unknown=134, NotChecked=168, Total=992 [2020-07-21 16:59:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:59:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:59:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:59:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:59:13,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2020-07-21 16:59:13,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:59:13,687 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:59:13,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-21 16:59:13,687 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:59:13,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:59:13,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:59:13,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:59:14,048 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-07-21 17:01:10,590 WARN L193 SmtUtils]: Spent 1.94 m on a formula simplification. DAG size of input: 278 DAG size of output: 125