/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:59:15,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:59:15,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:59:15,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:59:15,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:59:15,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:59:15,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:59:15,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:59:15,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:59:15,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:59:15,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:59:15,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:59:15,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:59:15,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:59:15,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:59:15,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:59:15,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:59:15,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:59:15,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:59:15,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:59:15,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:59:15,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:59:15,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:59:15,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:59:15,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:59:15,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:59:15,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:59:15,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:59:15,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:59:15,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:59:15,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:59:15,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:59:15,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:59:15,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:59:15,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:59:15,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:59:15,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:59:15,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:59:15,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:59:15,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:59:15,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:59:15,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:59:15,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:59:15,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:59:15,877 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:59:15,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:59:15,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:59:15,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:59:15,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:59:15,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:59:15,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:59:15,881 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:59:16,167 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:59:16,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:59:16,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:59:16,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:59:16,195 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:59:16,195 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-07-07 13:59:16,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e056a0ab9/b6dd8293e2084dac9ae53ea2681fdc41/FLAG47ac7529b [2020-07-07 13:59:16,779 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:59:16,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-07-07 13:59:16,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e056a0ab9/b6dd8293e2084dac9ae53ea2681fdc41/FLAG47ac7529b [2020-07-07 13:59:17,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e056a0ab9/b6dd8293e2084dac9ae53ea2681fdc41 [2020-07-07 13:59:17,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:59:17,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:59:17,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:59:17,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:59:17,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:59:17,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:59:17" (1/1) ... [2020-07-07 13:59:17,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f81bbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:17, skipping insertion in model container [2020-07-07 13:59:17,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:59:17" (1/1) ... [2020-07-07 13:59:17,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:59:17,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:59:17,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:59:17,542 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:59:17,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:59:17,702 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:59:17,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:17 WrapperNode [2020-07-07 13:59:17,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:59:17,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:59:17,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:59:17,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:59:17,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:17" (1/1) ... [2020-07-07 13:59:17,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:17" (1/1) ... [2020-07-07 13:59:17,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:17" (1/1) ... [2020-07-07 13:59:17,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:17" (1/1) ... [2020-07-07 13:59:17,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:17" (1/1) ... [2020-07-07 13:59:17,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:17" (1/1) ... [2020-07-07 13:59:17,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:17" (1/1) ... [2020-07-07 13:59:17,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:59:17,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:59:17,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:59:17,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:59:17,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:17" (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 [2020-07-07 13:59:17,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:59:17,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:59:17,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:59:17,829 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-07-07 13:59:17,829 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-07-07 13:59:17,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:59:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:59:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-07 13:59:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:59:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-07-07 13:59:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-07-07 13:59:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-07-07 13:59:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-07-07 13:59:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-07-07 13:59:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-07-07 13:59:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-07-07 13:59:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-07-07 13:59:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-07 13:59:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-07-07 13:59:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-07 13:59:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-07-07 13:59:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-07-07 13:59:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-07 13:59:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-07-07 13:59:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-07-07 13:59:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-07-07 13:59:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-07-07 13:59:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-07-07 13:59:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-07-07 13:59:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-07-07 13:59:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-07-07 13:59:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-07-07 13:59:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-07-07 13:59:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-07-07 13:59:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-07-07 13:59:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:59:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:59:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:59:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:59:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:59:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:59:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:59:18,343 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:59:18,344 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-07 13:59:18,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:59:18 BoogieIcfgContainer [2020-07-07 13:59:18,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:59:18,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:59:18,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:59:18,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:59:18,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:59:17" (1/3) ... [2020-07-07 13:59:18,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb19fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:59:18, skipping insertion in model container [2020-07-07 13:59:18,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:17" (2/3) ... [2020-07-07 13:59:18,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb19fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:59:18, skipping insertion in model container [2020-07-07 13:59:18,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:59:18" (3/3) ... [2020-07-07 13:59:18,359 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-07-07 13:59:18,371 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:59:18,380 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:59:18,396 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:59:18,419 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:59:18,420 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:59:18,420 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:59:18,420 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:59:18,420 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:59:18,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:59:18,421 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:59:18,421 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:59:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2020-07-07 13:59:18,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-07 13:59:18,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:18,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:18,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:18,459 INFO L82 PathProgramCache]: Analyzing trace with hash 593727157, now seen corresponding path program 1 times [2020-07-07 13:59:18,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:18,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401912692] [2020-07-07 13:59:18,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:18,676 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:18,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401912692] [2020-07-07 13:59:18,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:18,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:59:18,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391970978] [2020-07-07 13:59:18,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:59:18,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:18,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:59:18,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:59:18,705 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 3 states. [2020-07-07 13:59:19,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:19,089 INFO L93 Difference]: Finished difference Result 254 states and 290 transitions. [2020-07-07 13:59:19,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:59:19,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-07 13:59:19,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:19,102 INFO L225 Difference]: With dead ends: 254 [2020-07-07 13:59:19,102 INFO L226 Difference]: Without dead ends: 111 [2020-07-07 13:59:19,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:59:19,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-07 13:59:19,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-07-07 13:59:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-07-07 13:59:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-07-07 13:59:19,177 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 51 [2020-07-07 13:59:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:19,178 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-07-07 13:59:19,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:59:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-07-07 13:59:19,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-07 13:59:19,181 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:19,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:19,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:59:19,182 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:19,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1128985001, now seen corresponding path program 1 times [2020-07-07 13:59:19,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:19,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654032660] [2020-07-07 13:59:19,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:19,297 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:19,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654032660] [2020-07-07 13:59:19,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:19,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:59:19,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351953135] [2020-07-07 13:59:19,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:59:19,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:19,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:59:19,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:59:19,304 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 4 states. [2020-07-07 13:59:19,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:19,554 INFO L93 Difference]: Finished difference Result 212 states and 232 transitions. [2020-07-07 13:59:19,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:59:19,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-07-07 13:59:19,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:19,557 INFO L225 Difference]: With dead ends: 212 [2020-07-07 13:59:19,557 INFO L226 Difference]: Without dead ends: 117 [2020-07-07 13:59:19,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:59:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-07-07 13:59:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 112. [2020-07-07 13:59:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-07-07 13:59:19,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2020-07-07 13:59:19,575 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 63 [2020-07-07 13:59:19,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:19,575 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2020-07-07 13:59:19,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:59:19,576 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2020-07-07 13:59:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-07 13:59:19,581 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:19,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:19,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:59:19,582 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:19,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1210839627, now seen corresponding path program 1 times [2020-07-07 13:59:19,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:19,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006268495] [2020-07-07 13:59:19,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:19,792 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:19,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006268495] [2020-07-07 13:59:19,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:19,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:59:19,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068323164] [2020-07-07 13:59:19,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:59:19,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:19,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:59:19,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:59:19,797 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand 6 states. [2020-07-07 13:59:20,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:20,048 INFO L93 Difference]: Finished difference Result 219 states and 239 transitions. [2020-07-07 13:59:20,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:59:20,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-07-07 13:59:20,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:20,051 INFO L225 Difference]: With dead ends: 219 [2020-07-07 13:59:20,051 INFO L226 Difference]: Without dead ends: 124 [2020-07-07 13:59:20,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:59:20,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-07 13:59:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 119. [2020-07-07 13:59:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-07-07 13:59:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2020-07-07 13:59:20,067 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 70 [2020-07-07 13:59:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:20,068 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2020-07-07 13:59:20,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:59:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2020-07-07 13:59:20,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-07-07 13:59:20,071 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:20,072 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:20,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:59:20,072 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:20,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:20,073 INFO L82 PathProgramCache]: Analyzing trace with hash -257337495, now seen corresponding path program 2 times [2020-07-07 13:59:20,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:20,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672638745] [2020-07-07 13:59:20,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:20,195 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:20,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672638745] [2020-07-07 13:59:20,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:20,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:59:20,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600219988] [2020-07-07 13:59:20,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:59:20,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:20,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:59:20,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:59:20,202 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand 8 states. [2020-07-07 13:59:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:20,467 INFO L93 Difference]: Finished difference Result 226 states and 246 transitions. [2020-07-07 13:59:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:59:20,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-07-07 13:59:20,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:20,470 INFO L225 Difference]: With dead ends: 226 [2020-07-07 13:59:20,470 INFO L226 Difference]: Without dead ends: 131 [2020-07-07 13:59:20,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:59:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-07 13:59:20,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2020-07-07 13:59:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-07 13:59:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2020-07-07 13:59:20,484 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 77 [2020-07-07 13:59:20,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:20,484 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2020-07-07 13:59:20,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:59:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2020-07-07 13:59:20,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-07 13:59:20,486 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:20,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:20,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:59:20,487 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:20,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:20,487 INFO L82 PathProgramCache]: Analyzing trace with hash 883135627, now seen corresponding path program 3 times [2020-07-07 13:59:20,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:20,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346866370] [2020-07-07 13:59:20,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:20,617 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:20,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346866370] [2020-07-07 13:59:20,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:20,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:59:20,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493243695] [2020-07-07 13:59:20,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:59:20,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:20,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:59:20,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:59:20,619 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand 10 states. [2020-07-07 13:59:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:20,914 INFO L93 Difference]: Finished difference Result 233 states and 253 transitions. [2020-07-07 13:59:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 13:59:20,915 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-07-07 13:59:20,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:20,916 INFO L225 Difference]: With dead ends: 233 [2020-07-07 13:59:20,917 INFO L226 Difference]: Without dead ends: 138 [2020-07-07 13:59:20,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-07-07 13:59:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-07 13:59:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2020-07-07 13:59:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-07-07 13:59:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2020-07-07 13:59:20,931 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 84 [2020-07-07 13:59:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:20,932 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2020-07-07 13:59:20,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:59:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2020-07-07 13:59:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-07 13:59:20,933 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:20,934 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:20,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:59:20,934 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:20,935 INFO L82 PathProgramCache]: Analyzing trace with hash -687690455, now seen corresponding path program 4 times [2020-07-07 13:59:20,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:20,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329174480] [2020-07-07 13:59:20,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:21,135 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:21,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329174480] [2020-07-07 13:59:21,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:21,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:59:21,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388882977] [2020-07-07 13:59:21,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:59:21,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:21,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:59:21,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:59:21,137 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand 12 states. [2020-07-07 13:59:21,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:21,463 INFO L93 Difference]: Finished difference Result 240 states and 260 transitions. [2020-07-07 13:59:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 13:59:21,464 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-07-07 13:59:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:21,465 INFO L225 Difference]: With dead ends: 240 [2020-07-07 13:59:21,466 INFO L226 Difference]: Without dead ends: 145 [2020-07-07 13:59:21,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:59:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-07-07 13:59:21,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 140. [2020-07-07 13:59:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-07 13:59:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2020-07-07 13:59:21,493 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 91 [2020-07-07 13:59:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:21,494 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2020-07-07 13:59:21,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:59:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2020-07-07 13:59:21,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-07-07 13:59:21,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:21,498 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:21,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:59:21,498 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:21,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:21,499 INFO L82 PathProgramCache]: Analyzing trace with hash -722319669, now seen corresponding path program 5 times [2020-07-07 13:59:21,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:21,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912245570] [2020-07-07 13:59:21,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:21,637 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:21,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912245570] [2020-07-07 13:59:21,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:21,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:59:21,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158288338] [2020-07-07 13:59:21,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:59:21,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:21,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:59:21,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:59:21,645 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 14 states. [2020-07-07 13:59:22,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:22,075 INFO L93 Difference]: Finished difference Result 247 states and 267 transitions. [2020-07-07 13:59:22,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 13:59:22,076 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 98 [2020-07-07 13:59:22,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:22,077 INFO L225 Difference]: With dead ends: 247 [2020-07-07 13:59:22,078 INFO L226 Difference]: Without dead ends: 152 [2020-07-07 13:59:22,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-07-07 13:59:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-07-07 13:59:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2020-07-07 13:59:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-07-07 13:59:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2020-07-07 13:59:22,090 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 98 [2020-07-07 13:59:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:22,090 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2020-07-07 13:59:22,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:59:22,091 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2020-07-07 13:59:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-07-07 13:59:22,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:22,092 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:22,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:59:22,092 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:22,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:22,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1819472617, now seen corresponding path program 6 times [2020-07-07 13:59:22,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:22,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733225592] [2020-07-07 13:59:22,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:22,284 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:22,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733225592] [2020-07-07 13:59:22,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:22,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 13:59:22,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014858548] [2020-07-07 13:59:22,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 13:59:22,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:22,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 13:59:22,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-07-07 13:59:22,287 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 16 states. [2020-07-07 13:59:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:22,903 INFO L93 Difference]: Finished difference Result 254 states and 274 transitions. [2020-07-07 13:59:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 13:59:22,903 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-07-07 13:59:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:22,905 INFO L225 Difference]: With dead ends: 254 [2020-07-07 13:59:22,905 INFO L226 Difference]: Without dead ends: 159 [2020-07-07 13:59:22,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-07-07 13:59:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-07-07 13:59:22,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 154. [2020-07-07 13:59:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-07-07 13:59:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2020-07-07 13:59:22,918 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 105 [2020-07-07 13:59:22,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:22,919 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2020-07-07 13:59:22,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 13:59:22,919 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2020-07-07 13:59:22,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-07-07 13:59:22,920 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:22,921 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:22,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:59:22,921 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:22,922 INFO L82 PathProgramCache]: Analyzing trace with hash -612628213, now seen corresponding path program 7 times [2020-07-07 13:59:22,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:22,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54213571] [2020-07-07 13:59:22,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:23,224 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:23,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54213571] [2020-07-07 13:59:23,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:23,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-07 13:59:23,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366958709] [2020-07-07 13:59:23,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-07 13:59:23,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:23,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-07 13:59:23,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-07-07 13:59:23,227 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand 18 states. [2020-07-07 13:59:23,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:23,662 INFO L93 Difference]: Finished difference Result 256 states and 276 transitions. [2020-07-07 13:59:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-07 13:59:23,663 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-07-07 13:59:23,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:23,664 INFO L225 Difference]: With dead ends: 256 [2020-07-07 13:59:23,665 INFO L226 Difference]: Without dead ends: 161 [2020-07-07 13:59:23,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2020-07-07 13:59:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-07-07 13:59:23,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-07-07 13:59:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-07 13:59:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2020-07-07 13:59:23,677 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 112 [2020-07-07 13:59:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:23,678 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2020-07-07 13:59:23,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-07 13:59:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2020-07-07 13:59:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-07 13:59:23,679 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:23,680 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:23,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:59:23,680 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:23,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1175857321, now seen corresponding path program 8 times [2020-07-07 13:59:23,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:23,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483891839] [2020-07-07 13:59:23,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:23,753 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:23,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483891839] [2020-07-07 13:59:23,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:23,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:59:23,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200735561] [2020-07-07 13:59:23,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:59:23,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:23,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:59:23,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:59:23,756 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 4 states. [2020-07-07 13:59:23,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:23,938 INFO L93 Difference]: Finished difference Result 249 states and 269 transitions. [2020-07-07 13:59:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:59:23,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-07-07 13:59:23,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:23,940 INFO L225 Difference]: With dead ends: 249 [2020-07-07 13:59:23,941 INFO L226 Difference]: Without dead ends: 162 [2020-07-07 13:59:23,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:59:23,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-07 13:59:23,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-07-07 13:59:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-07-07 13:59:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-07-07 13:59:23,971 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 119 [2020-07-07 13:59:23,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:23,972 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-07-07 13:59:23,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:59:23,972 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-07-07 13:59:23,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-07-07 13:59:23,973 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:23,974 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:23,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 13:59:23,974 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:23,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:23,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1395739916, now seen corresponding path program 1 times [2020-07-07 13:59:23,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:23,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675269979] [2020-07-07 13:59:23,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:24,094 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:24,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675269979] [2020-07-07 13:59:24,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:24,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:59:24,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377753011] [2020-07-07 13:59:24,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:59:24,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:24,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:59:24,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:59:24,097 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 8 states. [2020-07-07 13:59:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:24,574 INFO L93 Difference]: Finished difference Result 427 states and 473 transitions. [2020-07-07 13:59:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 13:59:24,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-07-07 13:59:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:24,583 INFO L225 Difference]: With dead ends: 427 [2020-07-07 13:59:24,583 INFO L226 Difference]: Without dead ends: 336 [2020-07-07 13:59:24,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-07-07 13:59:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-07-07 13:59:24,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 199. [2020-07-07 13:59:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-07-07 13:59:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 217 transitions. [2020-07-07 13:59:24,630 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 217 transitions. Word has length 121 [2020-07-07 13:59:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:24,631 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 217 transitions. [2020-07-07 13:59:24,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:59:24,631 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 217 transitions. [2020-07-07 13:59:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-07-07 13:59:24,634 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:24,634 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:24,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 13:59:24,635 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:24,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:24,636 INFO L82 PathProgramCache]: Analyzing trace with hash 454539305, now seen corresponding path program 1 times [2020-07-07 13:59:24,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:24,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774525182] [2020-07-07 13:59:24,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:24,745 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:24,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774525182] [2020-07-07 13:59:24,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:24,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:59:24,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237000400] [2020-07-07 13:59:24,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:59:24,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:24,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:59:24,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:59:24,752 INFO L87 Difference]: Start difference. First operand 199 states and 217 transitions. Second operand 4 states. [2020-07-07 13:59:24,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:24,964 INFO L93 Difference]: Finished difference Result 289 states and 317 transitions. [2020-07-07 13:59:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:59:24,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-07-07 13:59:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:24,967 INFO L225 Difference]: With dead ends: 289 [2020-07-07 13:59:24,968 INFO L226 Difference]: Without dead ends: 200 [2020-07-07 13:59:24,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:59:24,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-07-07 13:59:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-07-07 13:59:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-07 13:59:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 217 transitions. [2020-07-07 13:59:24,986 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 217 transitions. Word has length 124 [2020-07-07 13:59:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:24,987 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 217 transitions. [2020-07-07 13:59:24,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:59:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 217 transitions. [2020-07-07 13:59:24,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-07-07 13:59:24,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:24,990 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:24,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 13:59:24,991 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:24,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1684557317, now seen corresponding path program 1 times [2020-07-07 13:59:24,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:24,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011530014] [2020-07-07 13:59:24,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:25,224 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:25,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011530014] [2020-07-07 13:59:25,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:25,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:59:25,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822761715] [2020-07-07 13:59:25,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:59:25,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:25,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:59:25,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:59:25,227 INFO L87 Difference]: Start difference. First operand 200 states and 217 transitions. Second operand 10 states. [2020-07-07 13:59:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:25,732 INFO L93 Difference]: Finished difference Result 499 states and 555 transitions. [2020-07-07 13:59:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 13:59:25,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-07-07 13:59:25,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:25,735 INFO L225 Difference]: With dead ends: 499 [2020-07-07 13:59:25,735 INFO L226 Difference]: Without dead ends: 406 [2020-07-07 13:59:25,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:59:25,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-07-07 13:59:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 204. [2020-07-07 13:59:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-07-07 13:59:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 221 transitions. [2020-07-07 13:59:25,753 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 221 transitions. Word has length 124 [2020-07-07 13:59:25,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:25,754 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 221 transitions. [2020-07-07 13:59:25,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:59:25,754 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 221 transitions. [2020-07-07 13:59:25,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-07 13:59:25,756 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:25,756 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:25,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 13:59:25,756 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:25,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1120204730, now seen corresponding path program 1 times [2020-07-07 13:59:25,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:25,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150294666] [2020-07-07 13:59:25,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:25,914 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:25,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150294666] [2020-07-07 13:59:25,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:25,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:59:25,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080201804] [2020-07-07 13:59:25,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:59:25,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:25,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:59:25,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:59:25,917 INFO L87 Difference]: Start difference. First operand 204 states and 221 transitions. Second operand 10 states. [2020-07-07 13:59:26,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:26,411 INFO L93 Difference]: Finished difference Result 450 states and 497 transitions. [2020-07-07 13:59:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 13:59:26,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-07-07 13:59:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:26,414 INFO L225 Difference]: With dead ends: 450 [2020-07-07 13:59:26,414 INFO L226 Difference]: Without dead ends: 346 [2020-07-07 13:59:26,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:59:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-07-07 13:59:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 214. [2020-07-07 13:59:26,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-07-07 13:59:26,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 233 transitions. [2020-07-07 13:59:26,434 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 233 transitions. Word has length 126 [2020-07-07 13:59:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:26,434 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 233 transitions. [2020-07-07 13:59:26,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:59:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 233 transitions. [2020-07-07 13:59:26,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-07 13:59:26,436 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:26,436 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:26,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 13:59:26,437 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:26,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:26,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2135603949, now seen corresponding path program 1 times [2020-07-07 13:59:26,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:26,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353589157] [2020-07-07 13:59:26,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:26,605 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:26,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353589157] [2020-07-07 13:59:26,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:26,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:59:26,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357644792] [2020-07-07 13:59:26,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:59:26,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:26,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:59:26,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:59:26,608 INFO L87 Difference]: Start difference. First operand 214 states and 233 transitions. Second operand 12 states. [2020-07-07 13:59:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:27,185 INFO L93 Difference]: Finished difference Result 488 states and 541 transitions. [2020-07-07 13:59:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-07 13:59:27,186 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 129 [2020-07-07 13:59:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:27,188 INFO L225 Difference]: With dead ends: 488 [2020-07-07 13:59:27,189 INFO L226 Difference]: Without dead ends: 384 [2020-07-07 13:59:27,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-07-07 13:59:27,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-07-07 13:59:27,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 195. [2020-07-07 13:59:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-07-07 13:59:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 211 transitions. [2020-07-07 13:59:27,208 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 211 transitions. Word has length 129 [2020-07-07 13:59:27,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:27,209 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 211 transitions. [2020-07-07 13:59:27,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:59:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 211 transitions. [2020-07-07 13:59:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-07 13:59:27,210 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:27,211 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:27,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 13:59:27,211 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:27,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:27,212 INFO L82 PathProgramCache]: Analyzing trace with hash -374659365, now seen corresponding path program 1 times [2020-07-07 13:59:27,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:27,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792971689] [2020-07-07 13:59:27,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:27,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 13:59:27,225 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 13:59:27,231 INFO L168 Benchmark]: Toolchain (without parser) took 10041.22 ms. Allocated memory was 145.2 MB in the beginning and 346.6 MB in the end (delta: 201.3 MB). Free memory was 102.7 MB in the beginning and 125.4 MB in the end (delta: -22.7 MB). Peak memory consumption was 178.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:27,232 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 145.2 MB. Free memory is still 121.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 13:59:27,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.16 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 102.3 MB in the beginning and 177.9 MB in the end (delta: -75.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:27,233 INFO L168 Benchmark]: Boogie Preprocessor took 55.58 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 175.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:27,234 INFO L168 Benchmark]: RCFGBuilder took 589.79 ms. Allocated memory is still 201.3 MB. Free memory was 175.0 MB in the beginning and 140.3 MB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:27,235 INFO L168 Benchmark]: TraceAbstraction took 8877.69 ms. Allocated memory was 201.3 MB in the beginning and 346.6 MB in the end (delta: 145.2 MB). Free memory was 139.4 MB in the beginning and 125.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 159.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:27,238 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 145.2 MB. Free memory is still 121.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 513.16 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 102.3 MB in the beginning and 177.9 MB in the end (delta: -75.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.58 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 175.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 589.79 ms. Allocated memory is still 201.3 MB. Free memory was 175.0 MB in the beginning and 140.3 MB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8877.69 ms. Allocated memory was 201.3 MB in the beginning and 346.6 MB in the end (delta: 145.2 MB). Free memory was 139.4 MB in the beginning and 125.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 159.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...